DOCUMENT NUMBER
9S12DT256DGV3/D
MC9S12DT256
Device User Guide
V03.07
Covers also
MC9S12A256, MC9S12DJ256
MC9S12DG256,
Original Release Date: 24 March 2003
Revised: 12 October 2005
Motorola, Inc
Motorola reserves the right to make changes without further notice to any products herein to improve reliability, function or
design. Motorola does not assume any liability arising out of the application or use of any product or circuit described herein;
neither does it convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended,
or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to
support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where
personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized
application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless
against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of
personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was
negligent regarding the design or manufacture of the part.
1
DOCUMENT NUMBER
9S12DT256DGV3/D
Revision History
Version Revision Effective
Number
Date
Date
V03.00
V03.01
V03.02
24 March
2003
30 June
2003
24 July
2003
Author
Description of Changes
Initial version for Maskset L91N , based on MC9S12DP256B
V02.11.
•
added new HCS12 core documentation
•
added cumulative program/erase cycle limitation
to Table A-12 for EEPROM
•
•
updated Table 0-2 Document References
removed cumulative program/erase cycle
limitation from Table A-12 for EEPROM
•
V03.03
26 July
2003
•
added LRAE generic load and execute info to
section 15
Added MC9S12DT256 in QFP 80 to Table 0-1
V03.04
15 March
2004
•
Added Masksets 0L01Y and 4L91N
V03.05
4 April
2005
•
V03.06
12 Oct
2005
Changed NVM data retention specification
Table A-12
Corrected Flash Burst Programming Time Table
A-11,
•
V03.07
02 Jan
2006
•
•
NVM Reliability Spec Table A-12 ,Figure A-2
Corrected Flash Burst Programming Time Table
A-11,
Motorola reserves the right to make changes without further notice to any products herein to improve reliability, function or
design. Motorola does not assume any liability arising out of the application or use of any product or circuit described herein;
neither does it convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended,
or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to
support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where
personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized
application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless
against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of
personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was
negligent regarding the design or manufacture of the part.
2
MC9S12DT256 Device User Guide — 9S12DT256DGV3/D V03.07
3
MC9S12DT256 Device User Guide — 9S12DT256DGV3/D V03.07
4
MC9S12DT256 Device User Guide — V03.07
Table of Contents
Section 1 IntroductionMC9S12DT256
1.1
1.2
1.3
1.4
1.5
1.6
1.7
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Device Memory Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Detailed Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Part ID Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Section 2 Signal Description
2.1
Device Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
2.2
Signal Properties Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
2.3
Detailed Signal Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
2.3.1
EXTAL, XTAL — Oscillator Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
2.3.2
RESET — External Reset Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
2.3.3
TEST — Test Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
2.3.4
VREGEN — Voltage Regulator Enable Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
2.3.5
XFC — PLL Loop Filter Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
2.3.6
BKGD / TAGHI / MODC — Background Debug, Tag High, and Mode Pin . . . . . . . .57
2.3.7
PAD15 / AN15 / ETRIG1 — Port AD Input Pin of ATD1 . . . . . . . . . . . . . . . . . . . . . .57
2.3.8
PAD[14:08] / AN[14:08] — Port AD Input Pins of ATD1 . . . . . . . . . . . . . . . . . . . . . .57
2.3.9
PAD7 / AN07 / ETRIG0 — Port AD Input Pin of ATD0 . . . . . . . . . . . . . . . . . . . . . . .58
2.3.10 PAD[06:00] / AN[06:00] — Port AD Input Pins of ATD0 . . . . . . . . . . . . . . . . . . . . . .58
2.3.11 PA[7:0] / ADDR[15:8] / DATA[15:8] — Port A I/O Pins . . . . . . . . . . . . . . . . . . . . . . .58
2.3.12 PB[7:0] / ADDR[7:0] / DATA[7:0] — Port B I/O Pins . . . . . . . . . . . . . . . . . . . . . . . . .58
2.3.13 PE7 / NOACC / XCLKS — Port E I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
2.3.14 PE6 / MODB / IPIPE1 — Port E I/O Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
2.3.15 PE5 / MODA / IPIPE0 — Port E I/O Pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
2.3.16 PE4 / ECLK — Port E I/O Pin 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
2.3.17 PE3 / LSTRB / TAGLO — Port E I/O Pin 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
2.3.18 PE2 / R/W — Port E I/O Pin 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
2.3.19 PE1 / IRQ — Port E Input Pin 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
2.3.20 PE0 / XIRQ — Port E Input Pin 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
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MC9S12DT256 Device User Guide — V03.07
2.3.21
2.3.22
2.3.23
2.3.24
2.3.25
2.3.26
2.3.27
2.3.28
2.3.29
2.3.30
2.3.31
2.3.32
2.3.33
2.3.34
2.3.35
2.3.36
2.3.37
2.3.38
2.3.39
2.3.40
2.3.41
2.3.42
2.3.43
2.3.44
2.3.45
2.3.46
2.3.47
2.3.48
2.3.49
2.3.50
2.3.51
2.3.52
2.3.53
2.3.54
2.3.55
2.3.56
6
PH7 / KWH7 / SS2 — Port H I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
PH6 / KWH6 / SCK2 — Port H I/O Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
PH5 / KWH5 / MOSI2 — Port H I/O Pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
PH4 / KWH4 / MISO2 — Port H I/O Pin 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
PH3 / KWH3 / SS1 — Port H I/O Pin 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
PH2 / KWH2 / SCK1 — Port H I/O Pin 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
PH1 / KWH1 / MOSI1 — Port H I/O Pin 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
PH0 / KWH0 / MISO1 — Port H I/O Pin 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
PJ7 / KWJ7 / TXCAN4 / SCL — PORT J I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . .62
PJ6 / KWJ6 / RXCAN4 / SDA — PORT J I/O Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . .62
PJ[1:0] / KWJ[1:0] — Port J I/O Pins [1:0] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
PK7 / ECS / ROMONE — Port K I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
PK[5:0] / XADDR[19:14] — Port K I/O Pins [5:0] . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
PM7 / TXCAN4 — Port M I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
PM6 / RXCAN4 — Port M I/O Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
PM5 / TXCAN0 / TXCAN4 / SCK0 — Port M I/O Pin 5 . . . . . . . . . . . . . . . . . . . . . . .63
PM4 / RXCAN0 / RXCAN4/ MOSI0 — Port M I/O Pin 4 . . . . . . . . . . . . . . . . . . . . . .63
PM3 / TXCAN1 / TXCAN0 / SS0 — Port M I/O Pin 3 . . . . . . . . . . . . . . . . . . . . . . . .63
PM2 / RXCAN1 / RXCAN0 / MISO0 — Port M I/O Pin 2 . . . . . . . . . . . . . . . . . . . . . .63
PM1 / TXCAN0 / TXB — Port M I/O Pin 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
PM0 / RXCAN0 / RXB — Port M I/O Pin 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
PP7 / KWP7 / PWM7 / SCK2 — Port P I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . . .64
PP6 / KWP6 / PWM6 / SS2 — Port P I/O Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
PP5 / KWP5 / PWM5 / MOSI2 — Port P I/O Pin 5. . . . . . . . . . . . . . . . . . . . . . . . . . .64
PP4 / KWP4 / PWM4 / MISO2 — Port P I/O Pin 4. . . . . . . . . . . . . . . . . . . . . . . . . . .64
PP3 / KWP3 / PWM3 / SS1 — Port P I/O Pin 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
PP2 / KWP2 / PWM2 / SCK1 — Port P I/O Pin 2 . . . . . . . . . . . . . . . . . . . . . . . . . . .65
PP1 / KWP1 / PWM1 / MOSI1 — Port P I/O Pin 1. . . . . . . . . . . . . . . . . . . . . . . . . . .65
PP0 / KWP0 / PWM0 / MISO1 — Port P I/O Pin 0. . . . . . . . . . . . . . . . . . . . . . . . . . .65
PS7 / SS0 — Port S I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
PS6 / SCK0 — Port S I/O Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
PS5 / MOSI0 — Port S I/O Pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
PS4 / MISO0 — Port S I/O Pin 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
PS3 / TXD1 — Port S I/O Pin 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
PS2 / RXD1 — Port S I/O Pin 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
PS1 / TXD0 — Port S I/O Pin 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
MC9S12DT256 Device User Guide — V03.07
2.3.57 PS0 / RXD0 — Port S I/O Pin 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
2.3.58 PT[7:0] / IOC[7:0] — Port T I/O Pins [7:0] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
2.4
Power Supply Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
2.4.1
VDDX,VSSX — Power & Ground Pins for I/O Drivers . . . . . . . . . . . . . . . . . . . . . . . .66
2.4.2
VDDR, VSSR — Power & Ground Pins for I/O Drivers & for Internal Voltage Regulator
66
2.4.3
VDD1, VDD2, VSS1, VSS2 — Core Power Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
2.4.4
VDDA, VSSA — Power Supply Pins for ATD and VREG . . . . . . . . . . . . . . . . . . . . .67
2.4.5
VRH, VRL — ATD Reference Voltage Input Pins . . . . . . . . . . . . . . . . . . . . . . . . . . .67
2.4.6
VDDPLL, VSSPLL — Power Supply Pins for PLL . . . . . . . . . . . . . . . . . . . . . . . . . . .67
2.4.7
VREGEN — On Chip Voltage Regulator Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Section 3 System Clock Description
3.1
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Section 4 Modes of Operation
4.1
4.2
4.3
4.3.1
4.3.2
4.3.3
4.4
4.4.1
4.4.2
4.4.3
4.4.4
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Chip Configuration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Securing the Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Operation of the Secured Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Unsecuring the Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Low Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Pseudo Stop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Wait . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
Section 5 Resets and Interrupts
5.1
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
5.2
Vectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
5.2.1
Vector Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
5.3
Effects of Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
5.3.1
I/O pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
5.3.2
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Section 6 HCS12 Core Block Description
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MC9S12DT256 Device User Guide — V03.07
6.1
6.2
6.2.1
6.3
6.3.1
6.4
6.5
6.6
CPU12 Block Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
HCS12 Module Mapping Control (MMC) Block Description . . . . . . . . . . . . . . . . . . . . . .79
Device specific information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
HCS12 Multiplexed External Bus Interface (MEBI) Block Description . . . . . . . . . . . . . .79
Device specific information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
HCS12 Interrupt (INT) Block description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
HCS12 Background Debug (BDM) Block Description . . . . . . . . . . . . . . . . . . . . . . . . . .79
HCS12 Breakpoint (BKP) Block Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Section 7 Clock and Reset Generator (CRG) Block Description
7.1
Device-specific information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
7.1.1
XCLKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Section 8 Enhanced Capture Timer (ECT) Block Description
Section 9 Analog to Digital Converter (ATD) Block Description
Section 10 Inter-IC Bus (IIC) Block Description
Section 11 Serial Communications Interface (SCI) Block Description
Section 12 Serial Peripheral Interface (SPI) Block Description
Section 13 J1850 (BDLC) Block Description
Section 14 Pulse Width Modulator (PWM) Block Description
Section 15 Flash EEPROM 256K Block Description
Section 16 EEPROM 4K Block Description
Section 17 RAM Block Description
Section 18 MSCAN Block Description
Section 19 Port Integration Module (PIM) Block Description
Section 20 Voltage Regulator (VREG) Block Description
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MC9S12DT256 Device User Guide — V03.07
Appendix A Electrical Characteristics
A.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
A.1.1
Parameter Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
A.1.2
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
A.1.3
Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
A.1.4
Current Injection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
A.1.5
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
A.1.6
ESD Protection and Latch-up Immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
A.1.7
Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
A.1.8
Power Dissipation and Thermal Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
A.1.9
I/O Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
A.1.10 Supply Currents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
A.2 ATD Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
A.2.1
ATD Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
A.2.2
Factors influencing accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
A.2.3
ATD accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
A.3 NVM, Flash and EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
A.3.1
NVM timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
A.3.2
NVM Reliability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
A.4 Voltage Regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
A.5 Reset, Oscillator and PLL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
A.5.1
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
A.5.2
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
A.5.3
Phase Locked Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
A.6 MSCAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
A.7 SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
A.7.1
Master Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
A.7.2
Slave Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
A.8 External Bus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
A.8.1
General Muxed Bus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
Appendix B Package Information
B.1
B.2
B.3
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127
112-pin LQFP package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
80-pin QFP package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129
9
MC9S12DT256 Device User Guide — V03.07
10
MC9S12DT256 Device User Guide — V03.07
List of Figures
Figure 0-1
Figure 1-1
Figure 1-2
Figure 2-1
Figure 2-2
Figure 2-3
Figure 2-4
Figure 2-5
Figure 2-6
Figure 3-1
Figure 20-1
Figure 20-2
Figure 20-3
Figure 20-4
Figure A-1
Figure A-2
Figure A-3
Figure A-4
Figure A-5
Figure A-6
Figure A-7
Figure A-8
Figure A-9
Figure A-10
Figure B-1
Figure B-2
Order Partnumber Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
MC9S12DT256 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
MC9S12DT256 Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Pin Assignments in 112-pin LQFP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Pin Assignments in 80-pin QFP for MC9S12DJ256 . . . . . . . . . . . . . . . . . . . . . .53
PLL Loop Filter Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Colpitts Oscillator Connections (PE7=1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Pierce Oscillator Connections (PE7=0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
External Clock Connections (PE7=0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Clock Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Recommended PCB Layout for 112LQFP Colpitts Oscillator . . . . . . . . . . . . . . .84
Recommended PCB Layout for 80QFP Colpitts Oscillator . . . . . . . . . . . . . . . . .85
Recommended PCB Layout for 112LQFP Pierce Oscillator . . . . . . . . . . . . . . . .86
Recommended PCB Layout for 80QFP Pierce Oscillator . . . . . . . . . . . . . . . . . .87
ATD Accuracy Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Typical Endurance vs Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Basic PLL functional diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Jitter Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Maximum bus clock jitter approximation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
SPI Master Timing (CPHA=0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
SPI Master Timing (CPHA=1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
SPI Slave Timing (CPHA=0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
SPI Slave Timing (CPHA=1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
General External Bus Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
112-pin LQFP mechanical dimensions (case no. 987) . . . . . . . . . . . . . . . . . . 128
80-pin QFP Mechanical Dimensions (case no. 841B) . . . . . . . . . . . . . . . . . . . 129
11
MC9S12DT256 Device User Guide — V03.07
12
MC9S12DT256 Device User Guide — V03.07
List of Tables
Table 0-1
Table 0-2
Table 0-3
Table 1-1
Table 1-2
Table 1-3
Table 1-4
Table 2-1
Table 2-2
Table 4-1
Table 4-2
Table 4-3
Table 5-1
Table A-1
Table A-2
Table A-3
Table A-4
Table A-5
Table A-6
Table A-7
Table A-8
Table A-9
Table A-10
Table A-11
Table A-12
Table A-13
Table A-14
Table A-15
Table A-16
Table A-17
Table A-18
Table A-19
Table A-20
Derivative Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Document References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Specification Change Summary for Maskset L91N . . . . . . . . . . . . . . . . . . . . . . . .17
Device Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Detailed MSCAN Foreground Receive and Transmit Buffer Layout. . . . . . . . . . .43
Assigned Part ID Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Memory size registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Signal Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
MC9S12DP256 Power and Ground Connection Summary . . . . . . . . . . . . . . . . . .67
Mode Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Clock Selection Based on PE7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Voltage Regulator VREGEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Interrupt Vector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
ESD and Latch-up Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
ESD and Latch-Up Protection Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Thermal Package Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
5V I/O Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Supply Current Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
ATD Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
ATD Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
ATD Conversion Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
NVM Timing Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
NVM Reliability Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Voltage Regulator Recommended Load Capacitances . . . . . . . . . . . . . . . . . . .109
Startup Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
Oscillator Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
PLL Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
MSCAN Wake-up Pulse Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
SPI Master Mode Timing Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
SPI Slave Mode Timing Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
13
MC9S12DT256 Device User Guide — V03.07
Table A-21 Expanded Bus Timing Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
14
MC9S12DT256 Device User Guide — V03.07
Derivative Differences and Document References
Derivative Differences
Table 0-1 shows the availability of peripheral modules on the various derivatives. For details about the
compatibility within the MC9S12D-Family refer also to engineering bulletin EB386.
Table 0-1 Derivative Differences
Generic
device
MC9S12A256
MC9S12DT256
MC9S12DJ256
MC9S12DG256
# of CANs
0
3
2
2
CAN0
—
✓
✓
✓
CAN1
—
✓
—
—
CAN4
—
✓
✓
✓
J1850/BDLC
—
—
✓
—
Package
112 LQFP/80 QFP
112 LQFP/80 QFP
112 LQFP/80 QFP
112 LQFP/80 QFP
Mask set
L91N/L01Y
L91N/L01Y
L91N/L01Y
L91N/L01Y
Temp Options
C
M, V, C
M, V, C
M, V, C
Package
Code
PV/FU
PV/FU
PV/FU
PV/FU
Notes
An errata exists
contact Sales
Office
An errata exists
contact Sales
Office
An errata exists
contact Sales
Office
An errata exists
contact Sales
Office
The following figure provides an ordering number example for the MC9S12H-Family devices.
MC9S12 DT256
C FU
Package Option
Temperature Option
Device Title
Controller Family
Temperature Options
C = -40˚C to 85˚C
V = -40˚C to 105˚C
M = -40˚C to 125˚C
Package Options
FU = 80QFP
PV = 112 LQFP
Figure 0-1 Order Partnumber Example
15
MC9S12DT256 Device User Guide — V03.07
The following items should be considered when using a derivative (Table 0-1):
•
•
•
Registers
–
Do not write or read CAN0 registers (after reset: address range $0140 - $017F), if using a
derivative without CAN0.
–
Do not write or read CAN1registers (after reset: address range $0180 - $01BF), if using a
derivative without CAN1.
–
Do not write or read CAN4 registers (after reset: address range $0280 - $02BF), if using a
derivative without CAN4.
–
Do not write or read BDLC registers (after reset: address range $00E8 - $00EF), if using a
derivative without BDLC.
Interrupts
–
Fill the four CAN0 interrupt vectors ($FFB0 - $FFB7) according to your coding policies for
unused interrupts, if using a derivative without CAN0.
–
Fill the four CAN1 interrupt vectors ($FFA8 - $FFAF) according to your coding policies for
unused interrupts, if using a derivative without CAN1.
–
Fill the four CAN4 interrupt vectors ($FF90 - $FF97) according to your coding policies for
unused interrupts, if using a derivative without CAN4.
–
Fill the BDLC interrupt vector ($FFC2, $FFC3) according to your coding policies for unused
interrupts, if using a derivative without BDLC.
Ports
–
The CAN0 pin functionality (TXCAN0, RXCAN0) is not available on port PJ7, PJ6, PM5,
PM4, PM3, PM2, PM1 and PM0, if using a derivative without CAN0.
–
The CAN1 pin functionality (TXCAN1, RXCAN1) is not available on port PM3 and PM2, if
using a derivative without CAN1.
–
The CAN4 pin functionality (TXCAN4, RXCAN4) is not available on port PJ7, PJ6, PM5,
PM7, PM6, PM5 and PM4, if using a derivative without CAN0.
–
The BDLC pin functionality (TXB, RXB) is not available on port PM1 and PM0, if using a
derivative without BDLC.
–
Do not write MODRR1 and MODRR0 bits of Module Routing Register (PIM_9DP256 Block
Guide), if using a derivative without CAN0.
–
Do not write MODRR3 and MODRR2 bits of Module Routing Register (PIM_9DP256 Block
Guide), if using a derivative without CAN4.
Document References
16
MC9S12DT256 Device User Guide — V03.07
The Device Guide provides information about the MC9S12DT256 device made up of standard HCS12
blocks and the HCS12 processor core.
This document is part of the customer documentation. A complete set of device manuals also includes the
HCS12 Core User Guide and all the individual Block Guides of the implemented modules. In a effort to
reduce redundancy all module specific information is located only in the respective Block Guide. If
applicable, special implementation details of the module are given in the block description sections of this
document.
See Table 0-2 for names and versions of the referenced documents throughout the Device User Guide.
Table 0-2 Document References
User Guide
Version
Document Order Number
CPU12 Reference Manual
V04
CPU12RM/AD
HCS12 Multiplexed External Bus Interface (MEBI) Block Guide
V03
S12MEBIV3/D
HCS12 Module Mapping Control (MMC) Block Guide
V04
S12MMCV4/D
HCS12 Interrupt (INT) Block Guide
V01
S12INTV1/D
HCS12 Background Debug (BDM) Block Guide
V04
S12BDMV4/D
HCS12 Breakpoint (BKP) Block Guide
V01
S12BKPV1/D
Clock and Reset Generator (CRG) Block User Guide
V04
S12CRGV4/D
Enhanced Capture Timer (ECT_16B8C) Block User Guide
V01
S12ECT16B8CV1/D
Analog to Digital Converter 10 Bit 8 Channels (ATD_10B8C) Block User Guide
V02
S12ATD10B8CV2/D
Inter IC Bus (IIC) Block User Guide
V02
S12IICV2/D
Asynchronous Serial Interface (SCI) Block User Guide
V02
S12SCIV2/D
Serial Peripheral Interface (SPI) Block User Guide
V03
S12SPIV3/D
Pulse Width Modulator 8 Bit 8 Channel (PWM_8B8C) Block User Guide
V01
S12PWM8B8CV1/D
256 K Byte Flash (FTS256K) Block User Guide
V03
S12FTS256KV3/D
4K Byte EEPROM (EETS4K) Block User Guide
V02
S12EETS4KV2/D
Byte Level Data Link Controller -J1850 (BDLC) Block User Guide
V01
S12BDLCV1/D
Motorola Scalable CAN (MSCAN) Block User Guide
V02
S12MSCANV2/D
Voltage Regulator (VREG) Block User Guide
V01
S12VREGV1/D
Port Integration Module (PIM_9DP256) Block User Guide
V03
S12PIM9DP256V3/D
Oscillator (OSC) Block Guide
V02
S12OSCV2/D
Table 0-3 shows the Specification Change Summary for Maskset L91N.
Table 0-3 Specification Change Summary for Maskset L91N
Block
MCU_9DT256
HCS12 V1.5
HCS12 V1.5
CRG
Spec Change
removed CAN2 and CAN3
The Background Debug Module includes an Acknowledge Protocol (two
additional hardware commands ACK_ENABLE/ACK_DISABLE)
The state of PK7/ROMCTL is latched into ROMON Bit during RESET into
Emulation Mode or Normal Expanded Mode
Maskset includes an additional Pierce Oscillator
17
MC9S12DT256 Device User Guide — V03.07
Table 0-3 Specification Change Summary for Maskset L91N
Block
EETS4K/FTS256K
PIM_9DP256
18
Spec Change
Reliability Specification for Non Volatile Memories
CAN0 can be routed to PORTJ
MC9S12DT256 Device User Guide — V03.07
Section 1 IntroductionMC9S12DT256
1.1 Overview
The MC9S12DT256 microcontroller unit (MCU) is a 16-bit device composed of standard on-chip
peripherals including a 16-bit central processing unit (HCS12 CPU), 256K bytes of Flash EEPROM, 12K
bytes of RAM, 4K bytes of EEPROM, two asynchronous serial communications interfaces (SCI), three
serial peripheral interfaces (SPI), an 8-channel IC/OC enhanced capture timer, two 8-channel, 10-bit
analog-to-digital converters (ADC), an 8-channel pulse-width modulator (PWM), a digital Byte Data Link
Controller (BDLC), 29 discrete digital I/O channels (Port A, Port B, Port K and Port E), 20 discrete digital
I/O lines with interrupt and wakeup capability, three CAN 2.0 A, B software compatible modules
(MSCAN12), and an Inter-IC Bus. The MC9S12DT256 has full 16-bit data paths throughout. However,
the external bus can operate in an 8-bit narrow mode so single 8-bit wide memory can be interfaced for
lower cost systems. The inclusion of a PLL circuit allows power consumption and performance to be
adjusted to suit operational requirements.
1.2 Features
•
HCS12 Core
–
16-bit HCS12 CPU
i. Upward compatible with M68HC11 instruction set
ii. Interrupt stacking and programmer’s model identical to M68HC11
iii. Instruction queue
iv. Enhanced indexed addressing
•
•
–
MEBI (Multiplexed External Bus Interface)
–
MMC (Module Mapping Control)
–
INT (Interrupt control)
–
BKP (Breakpoints)
–
BDM (Background Debug Mode)
CRG
–
Low current Colpitts or Pierce oscillator
–
PLL
–
COP watchdog
–
Real time interrupt
–
Clock Monitor
8-bit and 4-bit ports with interrupt functionality
–
Digital filtering
19
MC9S12DT256 Device User Guide — V03.07
–
•
•
•
•
•
•
•
Memory
–
256K Flash EEPROM
–
4K byte EEPROM
–
12K byte RAM
Two 8-channel Analog-to-Digital Converters
–
10-bit resolution
–
External conversion trigger capability
Three 1M bit per second, CAN 2.0 A, B software compatible modules
–
Five receive and three transmit buffers
–
Flexible identifier filter programmable as 2 x 32 bit, 4 x 16 bit or 8 x 8 bit
–
Four separate interrupt channels for Rx, Tx, error and wake-up
–
Low-pass filter wake-up function
–
Loop-back for self test operation
Enhanced Capture Timer
–
16-bit main counter with 7-bit prescaler
–
8 programmable input capture or output compare channels
–
Four 8-bit or two 16-bit pulse accumulators
8 PWM channels
–
Programmable period and duty cycle
–
8-bit 8-channel or 16-bit 4-channel
–
Separate control for each pulse width and duty cycle
–
Center-aligned or left-aligned outputs
–
Programmable clock select logic with a wide range of frequencies
–
Fast emergency shutdown input
–
Usable as interrupt inputs
Serial interfaces
–
Two asynchronous Serial Communications Interfaces (SCI)
–
Three Synchronous Serial Peripheral Interface (SPI)
Byte Data Link Controller (BDLC)
–
•
20
Programmable rising or falling edge trigger
SAE J1850 Class B Data Communications Network Interface Compatible and ISO Compatible
for Low-Speed (=100nF
C5
VDDPLL filter cap
ceramic X7R
100nF
C6
VDDX filter cap
X7R/tantalum
>=100nF
C7
OSC load cap
C8
OSC load cap
C9 / CS
PLL loop filter cap
C10 / CP
PLL loop filter cap
C11 / CDC
DC cutoff cap
Colpitts mode only, if recommended by
quartz manufacturer
R1 / R
PLL loop filter res
See PLL Specification chapter
See PLL specification chapter
R2 / RB
Pierce mode only
R3 / RS
Q1
Quartz
The PCB must be carefully laid out to ensure proper operation of the voltage regulator as well as of the
MCU itself. The following rules must be observed:
•
Every supply pair must be decoupled by a ceramic capacitor connected as near as possible to the
corresponding pins (C1 – C6).
•
Central point of the ground star should be the VSSR pin.
•
Use low ohmic low inductance connections between VSS1, VSS2 and VSSR.
•
VSSPLL must be directly connected to VSSR.
•
Keep traces of VSSPLL, EXTAL and XTAL as short as possible and occupied board area for C7,
C8, C11 and Q1 as small as possible.
•
Do not place other signals or supplies underneath area occupied by C7, C8, C10 and Q1 and the
connection area to the MCU.
•
Central power input should be fed in at the VDDA/VSSA pins.
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MC9S12DT256 Device User Guide — V03.07
Figure 20-1 Recommended PCB Layout for 112LQFP Colpitts Oscillator
VREGEN
C6
VDDX
VSSX
VSSA
C3
VDDA
VDD1
C1
VSS1
VSS2
C2
VDD2
VSSR
C4
C7
84
C8
C10
C9
R1
C11
C5
VDDR
Q1
VSSPLL
VDDPLL
MC9S12DT256 Device User Guide — V03.07
Figure 20-2 Recommended PCB Layout for 80QFP Colpitts Oscillator
VREGEN
C6
VDDX
VSSX
VSSA
C3
VDDA
VDD1
VSS2
C1
C2
VSS1
VDD2
VSSR
C4
C5
VDDR
C7
C8
C11
Q1
C10
C9
R1
VSSPLL
VDDPLL
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MC9S12DT256 Device User Guide — V03.07
Figure 20-3 Recommended PCB Layout for 112LQFP Pierce Oscillator
VREGEN
C6
VDDX
VSSX
VSSA
C3
VDDA
VDD1
C1
VSS1
VSS2
C2
VDD2
VSSR
VSSPLL
C4
R3
C5
VDDR
R2
Q1
86
C7
R1
C8
C10
C9
VDDPLL
MC9S12DT256 Device User Guide — V03.07
Figure 20-4 Recommended PCB Layout for 80QFP Pierce Oscillator
VREGEN
C6
VDDX
VSSX
VSSA
C3
VDDA
VDD1
VSS2
C1
C2
VSS1
VDD2
VSSPLL
VSSR
C4
R3
C5
VDDR
R2
Q1
C7
C8
C10
C9
R1
VSSPLL
VDDPLL
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MC9S12DT256 Device User Guide — V03.07
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MC9S12DT256 Device User Guide — V03.07
Appendix A Electrical Characteristics
A.1 General
NOTE:
The electrical characteristics given in this section are preliminary and should be
used as a guide only. Values cannot be guaranteed by Motorola and are subject to
change without notice.
This supplement contains the most accurate electrical information for the MC9S12DT256 microcontroller
available at the time of publication. The information should be considered PRELIMINARY and is subject
to change.
This introduction is intended to give an overview on several common topics like power supply, current
injection etc.
A.1.1 Parameter Classification
The electrical parameters shown in this supplement are guaranteed by various methods. To give the
customer a better understanding the following classification is used and the parameters are tagged
accordingly in the tables where appropriate.
NOTE:
This classification is shown in the column labeled “C” in the parameter tables
where appropriate.
P:
Those parameters are guaranteed during production testing on each individual device.
C:
Those parameters are achieved by the design characterization by measuring a statistically relevant
sample size across process variations.
T:
Those parameters are achieved by design characterization on a small sample size from typical devices
under typical conditions unless otherwise noted. All values shown in the typical column are within
this category.
D:
Those parameters are derived mainly from simulations.
A.1.2 Power Supply
The MC9S12DT256 utilizes several pins to supply power to the I/O ports, A/D converter, oscillator and
PLL as well as the digital core.
The VDDA, VSSA pair supplies the A/D converter and the resistor ladder of the internal voltage regulator.
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MC9S12DT256 Device User Guide — V03.07
The VDDX, VSSX, VDDR and VSSR pairs supply the I/O pins, VDDR supplies also the internal voltage
regulator.
VDD1, VSS1, VDD2 and VSS2 are the supply pins for the digital logic, VDDPLL, VSSPLL supply the
oscillator and the PLL.
VSS1 and VSS2 are internally connected by metal.
VDDA, VDDX, VDDR as well as VSSA, VSSX, VSSR are connected by anti-parallel diodes for ESD
protection.
NOTE:
In the following context VDD5 is used for either VDDA, VDDR and VDDX; VSS5
is used for either VSSA, VSSR and VSSX unless otherwise noted.
IDD5 denotes the sum of the currents flowing into the VDDA, VDDX and VDDR
pins.
VDD is used for VDD1, VDD2 and VDDPLL, VSS is used for VSS1, VSS2 and
VSSPLL.
IDD is used for the sum of the currents flowing into VDD1 and VDD2.
A.1.3 Pins
There are four groups of functional pins.
A.1.3.1 5V I/O pins
Those I/O pins have a nominal level of 5V. This class of pins is comprised of all port I/O pins, the analog
inputs, BKGD and the RESET pins.The internal structure of all those pins is identical, however some of
the functionality may be disabled. E.g. for the analog inputs the output drivers, pull-up and pull-down
resistors are disabled permanently.
A.1.3.2 Analog Reference
This group is made up by the VRH and VRL pins.
A.1.3.3 Oscillator
The pins XFC, EXTAL, XTAL dedicated to the oscillator have a nominal 2.5V level. They are supplied
by VDDPLL.
A.1.3.4 TEST
This pin is used for production testing only.
A.1.3.5 VREGEN
This pin is used to enable the on chip voltage regulator.
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MC9S12DT256 Device User Guide — V03.07
A.1.4 Current Injection
Power supply must maintain regulation within operating VDD5 or VDD range during instantaneous and
operating maximum current conditions. If positive injection current (Vin > VDD5) is greater than IDD5, the
injection current may flow out of VDD5 and could result in external power supply going out of regulation.
Ensure external VDD5 load will shunt current greater than maximum injection current. This will be the
greatest risk when the MCU is not consuming power; e.g. if no system clock is present, or if clock rate is
very low which would reduce overall power consumption.
A.1.5 Absolute Maximum Ratings
Absolute maximum ratings are stress ratings only. A functional operation under or outside those maxima
is not guaranteed. Stress beyond those limits may affect the reliability or cause permanent damage of the
device.
This device contains circuitry protecting against damage due to high static voltage or electrical fields;
however, it is advised that normal precautions be taken to avoid application of any voltages higher than
maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused
inputs are tied to an appropriate logic voltage level (e.g., either VSS5 or VDD5).
Table A-1 Absolute Maximum Ratings1
Num
Rating
Symbol
Min
Max
Unit
1
I/O, Regulator and Analog Supply Voltage
VDD5
-0.3
6.0
V
2
Digital Logic Supply Voltage 2
VDD
-0.3
3.0
V
3
PLL Supply Voltage 2
VDDPLL
-0.3
3.0
V
4
Voltage difference VDDX to VDDR and VDDA
∆VDDX
-0.3
0.3
V
5
Voltage difference VSSX to VSSR and VSSA
∆VSSX
-0.3
0.3
V
6
Digital I/O Input Voltage
VIN
-0.3
6.0
V
7
Analog Reference
VRH, VRL
-0.3
6.0
V
8
XFC, EXTAL, XTAL inputs
VILV
-0.3
3.0
V
9
TEST input
VTEST
-0.3
10.0
V
10
Instantaneous Maximum Current
Single pin limit for all digital I/O pins 3
ID
-25
+25
mA
11
Instantaneous Maximum Current
Single pin limit for XFC, EXTAL, XTAL4
IDL
-25
+25
mA
12
Instantaneous Maximum Current
Single pin limit for TEST 5
IDT
-0.25
0
mA
13
Storage Temperature Range
T
– 65
155
°C
stg
NOTES:
1. Beyond absolute maximum ratings device might be damaged.
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MC9S12DT256 Device User Guide — V03.07
2. The device contains an internal voltage regulator to generate the logic and PLL supply out of the I/O supply.
The absolute maximum ratings apply when the device is powered from an external source.
3. All digital I/O pins are internally clamped to VSSX and VDDX, VSSR and VDDR or VSSA and VDDA.
4. Those pins are internally clamped to VSSPLL and VDDPLL.
5. This pin is clamped low to VSSR, but not clamped high. This pin must be tied low in applications.
A.1.6 ESD Protection and Latch-up Immunity
All ESD testing is in conformity with CDF-AEC-Q100 Stress test qualification for Automotive Grade
Integrated Circuits. During the device qualification ESD stresses were performed for the Human Body
Model (HBM), the Machine Model (MM) and the Charge Device Model.
A device will be defined as a failure if after exposure to ESD pulses the device no longer meets the device
specification. Complete DC parametric and functional testing is performed per the applicable device
specification at room temperature followed by hot temperature, unless specified otherwise in the device
specification.
Table A-2 ESD and Latch-up Test Conditions
Model
Human Body
Machine
Description
Symbol
Value
Unit
Series Resistance
R1
1500
Ohm
Storage Capacitance
C
100
pF
Number of Pulse per pin
positive
negative
-
3
3
Series Resistance
R1
0
Ohm
Storage Capacitance
C
200
pF
Number of Pulse per pin
positive
negative
-
3
3
Minimum input voltage limit
-2.5
V
Maximum input voltage limit
7.5
V
Latch-up
Table A-3 ESD and Latch-Up Protection Characteristics
Num C
92
Rating
Symbol
Min
Max
Unit
1
C Human Body Model (HBM)
VHBM
2000
-
V
2
C Machine Model (MM)
VMM
200
-
V
3
C Charge Device Model (CDM)
VCDM
500
-
V
4
Latch-up Current at TA = 125°C
C positive
negative
ILAT
+100
-100
-
mA
5
Latch-up Current at TA = 27°C
C positive
negative
ILAT
+200
-200
-
mA
MC9S12DT256 Device User Guide — V03.07
A.1.7 Operating Conditions
This chapter describes the operating conditions of the device. Unless otherwise noted those conditions
apply to all the following data.
NOTE:
Please refer to the temperature rating of the device (C, V, M) with regards to the
ambient temperature TA and the junction temperature TJ. For power dissipation
calculations refer to Section A.1.8 Power Dissipation and Thermal
Characteristics.
Table A-4 Operating Conditions
Rating
Symbol
Min
Typ
Max
Unit
I/O, Regulator and Analog Supply Voltage
VDD5
4.5
5
5.25
V
Digital Logic Supply Voltage 1
VDD
2.35
2.5
2.75
V
PLL Supply Voltage 1
VDDPLL
2.35
2.5
2.75
V
Voltage Difference VDDX to VDDR and VDDA
∆VDDX
-0.1
0
0.1
V
Voltage Difference VSSX to VSSR and VSSA
∆VSSX
-0.1
0
0.1
V
Oscillator
fosc
0.5
-
16
MHz
Bus Frequency
fbus
0.5
-
25
MHz
TJ
-40
-
100
°C
T
A
-40
27
85
°C
Operating Junction Temperature Range
TJ
-40
-
120
°C
Operating Ambient Temperature Range 2
TA
-40
27
105
°C
Operating Junction Temperature Range
TJ
-40
-
140
°C
Operating Ambient Temperature Range 2
TA
-40
27
125
°C
MC9S12DT256C
Operating Junction Temperature Range
Operating Ambient Temperature Range 2
MC9S12DT256V
MC9S12DT256M
NOTES:
1. The device contains an internal voltage regulator to generate the logic and PLL supply out of the I/O supply. The
absolute maximum ratings apply when this regulator is disabled and the device is powered from an external
source.
2. Please refer to Section A.1.8 Power Dissipation and Thermal Characteristics for more details about the relation between ambient temperature TA and device junction temperature TJ.
A.1.8 Power Dissipation and Thermal Characteristics
Power dissipation and thermal characteristics are closely related. The user must assure that the maximum
operating junction temperature is not exceeded. The average chip-junction temperature (TJ) in °C can be
obtained from:
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MC9S12DT256 Device User Guide — V03.07
T J = T A + ( P D • Θ JA )
T J = Junction Temperature, [°C ]
T A = Ambient Temperature, [°C ]
P D = Total Chip Power Dissipation, [W]
Θ JA = Package Thermal Resistance, [°C/W]
The total power dissipation can be calculated from:
P D = P INT + P IO
P INT = Chip Internal Power Dissipation, [W]
Two cases with internal voltage regulator enabled and disabled must be considered:
1. Internal Voltage Regulator disabled
P INT = I DD ⋅ V DD + I DDPLL ⋅ V DDPLL + I DDA ⋅ V DDA
2
P IO =
R DSON ⋅ I IO
i
i
∑
PIO is the sum of all output currents on I/O ports associated with VDDX and VDDR.
For RDSON is valid:
V OL
R DSON = ------------ ;for outputs driven low
I OL
respectively
V DD5 – V OH
R DSON = ------------------------------------ ;for outputs driven high
I OH
2. Internal voltage regulator enabled
P INT = I DDR ⋅ V DDR + I DDA ⋅ V DDA
IDDR is the current shown in Table A-7 and not the overall current flowing into VDDR, which
additionally contains the current flowing into the external loads with output high.
2
P IO =
R DSON ⋅ I IO
i
i
∑
PIO is the sum of all output currents on I/O ports associated with VDDX and VDDR.
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MC9S12DT256 Device User Guide — V03.07
Table A-5 Thermal Package Characteristics1
Num C
Rating
Symbol
Min
Typ
Max
Unit
1
T Thermal Resistance LQFP112, single sided PCB2
θJA
-
-
54
o
2
T
Thermal Resistance LQFP112, double sided PCB
with 2 internal planes3
θJA
-
-
41
o
3
T Thermal Resistance LQFP 80, single sided PCB
θJA
-
-
51
oC/W
4
T
θJA
-
-
41
o
Thermal Resistance LQFP 80, double sided PCB
with 2 internal planes
C/W
C/W
C/W
NOTES:
1. The values for thermal resistance are achieved by package simulations
2. PC Board according to EIA/JEDEC Standard 51-2
3. PC Board according to EIA/JEDEC Standard 51-7
A.1.9 I/O Characteristics
This section describes the characteristics of all 5V I/O pins. All parameters are not always applicable, e.g.
not all pins feature pull up/down resistances.
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MC9S12DT256 Device User Guide — V03.07
Table A-6 5V I/O Characteristics
Conditions are shown in Table A-4 unless otherwise noted
Num C
1
2
Rating
Symbol
Min
Typ
Max
Unit
0.65*VDD5
-
-
V
P Input High Voltage
V
T Input High Voltage
VIH
-
-
VDD5 + 0.3
V
P Input Low Voltage
VIL
-
-
0.35*VDD5
V
T Input Low Voltage
VIL
VSS5 - 0.3
-
-
V
3
C Input Hysteresis
4
Input Leakage Current (pins in high impedance input
P mode)1
Vin = VDD5 or VSS5
5
C
6
IH
V
250
HYS
mV
I
in
–2.5
-
2.5
µA
Output High Voltage (pins in output mode)
Partial Drive IOH = –2mA
V
OH
VDD5 – 0.8
-
-
V
P
Output High Voltage (pins in output mode)
Full Drive IOH = –10mA
VOH
VDD5 – 0.8
-
-
V
7
C
Output Low Voltage (pins in output mode)
Partial Drive IOL = +2mA
VOL
-
-
0.8
V
8
P
Output Low Voltage (pins in output mode)
Full Drive IOL = +10mA
V
OL
-
-
0.8
V
9
Internal Pull Up Device Current,
P tested at V Max.
IPUL
-
-
-130
µA
Internal Pull Up Device Current,
C tested at V Min.
IPUH
-10
-
-
µA
Internal Pull Down Device Current,
P tested at V Min.
IPDH
-
-
130
µA
Internal Pull Down Device Current,
C tested at V Max.
IPDL
10
-
-
µA
13
D Input Capacitance
Cin
6
-
pF
14
Injection current2
T Single Pin limit
Total Device Limit. Sum of all injected currents
IICS
IICP
-
2.5
25
mA
15
P Port H, J, P Interrupt Input Pulse filtered3
tPULSE
3
µs
16
P Port H, J, P Interrupt Input Pulse passed3
tPULSE
IL
10
IH
11
IH
12
IL
-2.5
-25
10
µs
NOTES:
1. Maximum leakage current occurs at maximum operating temperature. Current decreases by approximately one-half for
each 8 C to 12 C in the temperature range from 50 C to 125 C.
2. Refer to Section A.1.4 Current Injection, for more details
3. Parameter only applies in STOP or Pseudo STOP mode.
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MC9S12DT256 Device User Guide — V03.07
A.1.10 Supply Currents
This section describes the current consumption characteristics of the device as well as the conditions for
the measurements.
A.1.10.1 Measurement Conditions
All measurements are without output loads. Unless otherwise noted the currents are measured in single
chip mode, internal voltage regulator enabled and at 25MHz bus frequency using a 4MHz oscillator in
Colpitts mode. Production testing is performed using a square wave signal at the EXTAL input.
A.1.10.2 Additional Remarks
In expanded modes the currents flowing in the system are highly dependent on the load at the address, data
and control signals as well as on the duty cycle of those signals. No generally applicable numbers can be
97
MC9S12DT256 Device User Guide — V03.07
given. A very good estimate is to take the single chip currents and add the currents due to the external
loads.
Table A-7 Supply Current Characteristics
Conditions are shown in Table A-4 unless otherwise noted
Num C
Rating
Symbol
Run supply currents
Single Chip, Internal regulator enabled
IDD5
65
IDDW
40
5
1
P
2
P
P
All modules enabled, PLL on
only RTI enabled 1
C
P
C
C
P
C
P
C
P
Pseudo Stop Current (RTI and COP disabled) 1, 2
-40°C
27°C
70°C
85°C
"C" Temp Option 100°C
105°C
"V" Temp Option 120°C
125°C
"M" Temp Option 140°C
C
C
C
C
C
C
C
Pseudo Stop Current (RTI and COP enabled) 1, 2
-40°C
27°C
70°C
85°C
105°C
125°C
140°C
Min
Typ
Max
Unit
mA
Wait Supply current
3
4
IDDPS
IDDPS
370
400
450
550
600
650
800
850
1200
mA
500
1600
µA
2100
5000
570
600
650
750
850
1200
1500
µA
Stop Current 2
5
C
P
C
C
P
C
P
C
P
-40°C
27°C
70°C
85°C
"C" Temp Option 100°C
105°C
"V" Temp Option 120°C
125°C
"M" Temp Option 140°C
NOTES:
1. PLL off
2. At those low power dissipation levels TJ = TA can be assumed
98
IDDS
12
25
100
130
160
200
350
400
600
100
1200
1700
5000
µA
MC9S12DT256 Device User Guide — V03.07
A.2 ATD Characteristics
This section describes the characteristics of the analog to digital converter.
A.2.1 ATD Operating Characteristics
The Table A-8 shows conditions under which the ATD operates.
The following constraints exist to obtain full-scale, full range results:
VSSA ≤ VRL ≤ VIN ≤ VRH ≤ VDDA. This constraint exists since the sample buffer amplifier can not drive
beyond the power supply levels that it ties to. If the input level goes outside of this range it will effectively
be clipped.
Table A-8 ATD Operating Characteristics
Conditions are shown in Table A-4 unless otherwise noted
Num C
Rating
Symbol
Min
VRL
VRH
VSSA
VDDA/2
Typ
Max
Unit
VDDA/2
VDDA
V
V
5.25
V
Reference Potential
1
D
Low
High
2
C Differential Reference Voltage1
VRH-VRL
4.50
3
D ATD Clock Frequency
fATDCLK
0.5
2.0
MHz
4
D
14
7
28
14
Cycles
µs
5
D
12
6
26
13
Cycles
µs
6
D Recovery Time (VDDA=5.0 Volts)
tREC
20
µs
7
P
Reference Supply current 2 ATD blocks on
IREF
0.750
mA
8
P
Reference Supply current 1 ATD block on
IREF
0.375
mA
5.00
ATD 10-Bit Conversion Period
Clock Cycles2 NCONV10
Conv, Time at 2.0MHz ATD Clock fATDCLK TCONV10
ATD 8-Bit Conversion Period
Clock Cycles2
Conv, Time at 2.0MHz ATD Clock fATDCLK
NCONV8
TCONV8
NOTES:
1. Full accuracy is not guaranteed when differential voltage is less than 4.50V
2. The minimum time assumes a final sample period of 2 ATD clocks cycles while the maximum time assumes a final sample
period of 16 ATD clocks.
A.2.2 Factors influencing accuracy
Three factors - source resistance, source capacitance and current injection - have an influence on the
accuracy of the ATD.
A.2.2.1 Source Resistance:
Due to the input pin leakage current as specified in Table A-6 in conjunction with the source resistance
there will be a voltage drop from the signal source to the ATD input. The maximum source resistance RS
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MC9S12DT256 Device User Guide — V03.07
specifies results in an error of less than 1/2 LSB (2.5mV) at the maximum leakage current. If device or
operating conditions are less than worst case or leakage-induced error is acceptable, larger values of source
resistance is allowed.
A.2.2.2 Source Capacitance
When sampling an additional internal capacitor is switched to the input. This can cause a voltage drop due
to charge sharing with the external and the pin capacitance. For a maximum sampling error of the input
voltage ≤ 1LSB, then the external filter capacitor, Cf ≥ 1024 * (CINS- CINN).
A.2.2.3 Current Injection
There are two cases to consider.
1. A current is injected into the channel being converted. The channel being stressed has conversion
values of $3FF ($FF in 8-bit mode) for analog inputs greater than VRH and $000 for values less than
VRL unless the current is higher than specified as disruptive condition.
2. Current is injected into pins in the neighborhood of the channel being converted. A portion of this
current is picked up by the channel (coupling ratio K), This additional current impacts the accuracy
of the conversion depending on the source resistance.
The additional input voltage error on the converted channel can be calculated as VERR = K * RS *
IINJ, with IINJ being the sum of the currents injected into the two pins adjacent to the converted
channel.
Table A-9 ATD Electrical Characteristics
Conditions are shown in Table A-4 unless otherwise noted
Num C
Rating
Symbol
Min
Typ
Max
Unit
RS
-
-
1
KΩ
10
22
pF
2.5
mA
1
C Max input Source Resistance
2
Total Input Capacitance
T Non Sampling
Sampling
3
C Disruptive Analog Input Current
INA
4
C Coupling Ratio positive current injection
Kp
10-4
A/A
5
C Coupling Ratio negative current injection
Kn
10-2
A/A
100
CINN
CINS
-2.5
MC9S12DT256 Device User Guide — V03.07
A.2.3 ATD accuracy
Table A-10 specifies the ATD conversion performance excluding any errors due to current injection,
input capacitance and source resistance.
Table A-10 ATD Conversion Performance
Conditions are shown in Table A-4 unless otherwise noted
VREF = VRH - VRL = 5.12V. Resulting to one 8 bit count = 20mV and one 10 bit count = 5mV
fATDCLK = 2.0MHz
Num C
Rating
Symbol
Min
1
P 10-Bit Resolution
LSB
2
P 10-Bit Differential Nonlinearity
DNL
–1
3
P 10-Bit Integral Nonlinearity
INL
–2.5
4
P 10-Bit Absolute Error1
AE
-3
5
P 8-Bit Resolution
LSB
6
P 8-Bit Differential Nonlinearity
DNL
–0.5
7
P 8-Bit Integral Nonlinearity
INL
–1.0
8
P 8-Bit Absolute Error1
AE
-1.5
Typ
Max
5
Unit
mV
1
Counts
±1.5
2.5
Counts
±2.0
3
Counts
20
mV
0.5
Counts
±0.5
1.0
Counts
±1.0
1.5
Counts
NOTES:
1. These values include the quantization error which is inherently 1/2 count for any A/D converter.
For the following definitions see also Figure A-1.
Differential Non-Linearity (DNL) is defined as the difference between two adjacent switching steps.
Vi – Vi – 1
DNL ( i ) = ------------------------ – 1
1LSB
The Integral Non-Linearity (INL) is defined as the sum of all DNLs:
n
INL ( n ) =
∑
i=1
Vn – V0
DNL ( i ) = -------------------- – n
1LSB
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MC9S12DT256 Device User Guide — V03.07
DNL
10-Bit Absolute Error Boundary
LSB
Vi-1
Vi
$3FF
8-Bit Absolute Error Boundary
$3FE
$3FD
$3FC
$FF
$3FB
$3FA
$3F9
$3F8
$FE
$3F7
$3F6
$3F4
8-Bit Resolution
10-Bit Resolution
$3F5
$FD
$3F3
9
Ideal Transfer Curve
8
2
7
10-Bit Transfer Curve
6
5
4
1
3
8-Bit Transfer Curve
2
1
0
5
10
15
20
25
30
35
40
50
5055 5060 5065 5070 5075 5080 5085 5090 5095 5100 5105 5110 5115 5120
Vin
mV
Figure A-1 ATD Accuracy Definitions
NOTE:
102
Figure A-1 shows only definitions, for specification values refer to Table A-10.
MC9S12DT256 Device User Guide V03.07
A.3 NVM, Flash and EEPROM
NOTE:
Unless otherwise noted the abbreviation NVM (Non Volatile Memory) is used for
both Flash and EEPROM.
A.3.1 NVM timing
The time base for all NVM program or erase operations is derived from the oscillator. A minimum
oscillator frequency fNVMOSC is required for performing program or erase operations. The NVM modules
do not have any means to monitor the frequency and will not prevent program or erase operation at
frequencies above or below the specified minimum. Attempting to program or erase the NVM modules at
a lower frequency a full program or erase transition is not assured.
The Flash and EEPROM program and erase operations are timed using a clock derived from the oscillator
using the FCLKDIV and ECLKDIV registers respectively. The frequency of this clock must be set within
the limits specified as fNVMOP.
The minimum program and erase times shown in Table A-11 are calculated for maximum fNVMOP and
maximum fbus. The maximum times are calculated for minimum fNVMOP and a fbus of 2MHz.
A.3.1.1 Single Word Programming
The programming time for single word programming is dependant on the bus frequency as a well as on
the frequency fNVMOP and can be calculated according to the following formula.
1
1
t swpgm = 9 ⋅ --------------------- + 25 ⋅ ---------f NVMOP
f bus
A.3.1.2 Burst Programming
This applies only to the Flash where up to 32 words in a row can be programmed consecutively using burst
programming by keeping the command pipeline filled. The time to program a consecutive word can be
calculated as:
1
1
t bwpgm = 4 ⋅ --------------------- + 9 ⋅ ---------f NVMOP
f bus
The time to program a whole row is:
t brpgm = t swpgm + 31 ⋅ t bwpgm
Burst programming is more than 2 times faster than single word programming.
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MC9S12DT256 Device User Guide V03.07
A.3.1.3 Sector Erase
Erasing a 512 byte Flash sector or a 4 byte EEPROM sector takes:
1
t era ≈ 4000 ⋅ --------------------f NVMOP
The setup time can be ignored for this operation.
A.3.1.4 Mass Erase
Erasing a NVM block takes:
1
t mass ≈ 20000 ⋅ --------------------f NVMOP
The setup time can be ignored for this operation.
A.3.1.5 Blank Check
The time it takes to perform a blank check on the Flash or EEPROM is dependant on the location of the
first non-blank word starting at relative address zero. It takes one bus cycle per word to verify plus a setup
of the command.
t check ≈ location ⋅ t cyc + 10 ⋅ t cyc
Table A-11 NVM Timing Characteristics
Conditions are shown in Table A-4 unless otherwise noted
Num C
Rating
Symbol
Min
Typ
Max
Unit
50 1
MHz
1
D External Oscillator Clock (MC9S12DT256C< V, M)
fNVMOSC
0.5
2
D Bus frequency for Programming or Erase Operations
fNVMBUS
1
3
D Operating Frequency
fNVMOP
150
200
kHz
4
P Single Word Programming Time
tswpgm
46 2
74.5 3
µs
5
D Flash Burst Programming consecutive word 4
tbwpgm
20.4 2
31 3
µs
6
D Flash Burst Programming Time for 32 Words 4
tbrpgm
678.4 2
1035.5 3
µs
7
P Sector Erase Time
tera
20 5
26.7 3
ms
8
P Mass Erase Time
tmass
100 5
133 3
ms
9
D Blank Check Time Flash per block
tcheck
11 6
32778 7
tcyc
10
D Blank Check Time EEPROM per block
tcheck
11 6
20587
tcyc
MHz
NOTES:
1. Restrictions for oscillator in crystal mode apply!
2. Minimum Programming times are achieved under maximum NVM operating frequency fNVMOP and maximum bus frequency
fbus.
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MC9S12DT256 Device User Guide V03.07
3. Maximum Erase and Programming times are achieved under particular combinations of fNVMOP and bus frequency fbus.
Refer to formulae in Sections A.3.1.1 - A.3.1.4 for guidance.
4. Burst Programming operations are not applicable to EEPROM
5. Minimum Erase times are achieved under maximum NVM operating frequency fNVMOP.
6. Minimum time, if first word in the array is not blank
7. Maximum time to complete check on an erased block
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MC9S12DT256 Device User Guide V03.07
A.3.2 NVM Reliability
The reliability of the NVM blocks is guaranteed by stress test during qualification, constant process
monitors and burn-in to screen early life failures.The program/erase cycle count on the sector is
incremented every time a sector or mass erase event is executed
Table A-12 NVM Reliability Characteristics1
Conditions are shown in Table A-4 unless otherwise noted
Num C
Rating
Symbol
Min
Typ
Max
15
1002
—
20
1002
—
10,000
—
—
10,000
100,0003
—
1002
—
Unit
Flash Reliability Characteristics
Data retention after 10,000 program/erase cycles at
an average junction temperature of TJavg ≤ 85°C
1
C
2
Data retention with