www.infineon.com
C161PI
Microcontrollers
C166 Family
16-Bit Single-Chip Microcontroller
C161PI
Data Sheet 1999-07
Preliminary
C161PI
Revision History:
Previous Versions:
1999-07 Preliminary
1998-05
1998-01
1997-12
(C161RI / Preliminary)
(C161RI / Advance Information)
(C161RI / Advance Information)
Page
Subjects
---
3 V specification introduced
4, 5, 7
Signal FOUT added
14
XRAM description added
15
Unlatched CS description added
23
Block Diagram corrected
24
Description of divider chain improved
25, 51, 52
ADC description updated to 10-bit
36, 37
Revised description of Absolute Max. Ratings and Operating Conditions
39, 44
Power supply values improved
45 - 50
Revised description for clock generation including PLL
54 ff.
Standard 25-MHz timing
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The C161PI is the successor of the C161RI. Therefore this data sheet also replaces the C161RI
data sheet (see also revision history).
Edition 1999-07
Published by Infineon Technologies AG i. Gr.,
St.-Martin-Strasse 53
D-81541 München
© Infineon Technologies AG 1999.
All Rights Reserved.
Attention please!
The information herein is given to describe certain components and shall not be considered as warranted characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and
charts stated herein.
Infineon Technologies is an approved CECC manufacturer.
Information
For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office
in Germany or our Infineon Technologies Representatives worldwide (see address list).
Warnings
Due to technical requirements components may contain dangerous substances. For information on the types in question please contact
your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect
the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to
support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other
persons may be endangered.
C166 Family of
High-Performance CMOS 16-Bit Microcontrollers
C161PI
Preliminary
C161PI 16-Bit Microcontroller
• High Performance 16-bit CPU with 4-Stage Pipeline
– 80 ns Instruction Cycle Time at 25 MHz CPU Clock
– 400 ns Multiplication (16 × 16 bit), 800 ns Division (32 / 16 bit)
– Enhanced Boolean Bit Manipulation Facilities
– Additional Instructions to Support HLL and Operating Systems
– Register-Based Design with Multiple Variable Register Banks
– Single-Cycle Context Switching Support
– 16 MBytes Total Linear Address Space for Code and Data
– 1024 Bytes On-Chip Special Function Register Area
• 16-Priority-Level Interrupt System with 27 Sources, Sample-Rate down to 40 ns
• 8-Channel Interrupt-Driven Single-Cycle Data Transfer Facilities via
Peripheral Event Controller (PEC)
• Clk. Generation via on-chip PLL (1:1.5/2/2.5/3/4/5), via prescaler or via direct clk. inp.
• On-Chip Memory Modules
– 1 KByte On-Chip Internal RAM (IRAM)
– 2 KBytes On-Chip Extension RAM (XRAM)
• On-Chip Peripheral Modules
– 4-Channel 10-bit A/D Converter with Programm. Conversion Time down to 7.8 µs
– Two Multi-Functional General Purpose Timer Units with 5 Timers
– Two Serial Channels (Synchronous/Asynchronous and High-Speed-Synchronous)
– I2C Bus Interface (10-bit Addressing, 400 KHz) with 2 Channels (multiplexed)
• Up to 8 MBytes External Address Space for Code and Data
– Programmable External Bus Characteristics for Different Address Ranges
– Multiplexed or Demultiplexed External Address/Data Buses with 8-Bit or 16-Bit
Data Bus Width
– Five Programmable Chip-Select Signals
• Idle and Power Down Modes with Flexible Power Management
• Programmable Watchdog Timer and Oscillator Watchdog
• On-Chip Real Time Clock
• Up to 76 General Purpose I/O Lines,
partly with Selectable Input Thresholds and Hysteresis
• Supported by a Large Range of Development Tools like C-Compilers,
Macro-Assembler Packages, Emulators, Evaluation Boards, HLL-Debuggers,
Simulators, Logic Analyzer Disassemblers, Programming Boards
• On-Chip Bootstrap Loader
• 100-Pin MQFP / TQFP Package
Data Sheet
1
1999-07
&3,
This document describes the SAB-C161PI-LM, the SAB-C161PI-LF, the SAF-C161PILM and the SAF-C161PI-LF.
For simplicity all versions are referred to by the term C161PI throughout this document.
Ordering Information
The ordering code for Infineon microcontrollers provides an exact reference to the
required product. This ordering code identifies:
•
•
•
•
the derivative itself, i.e. its function set
the specified temperature range
the package
the type of delivery.
For the available ordering codes for the C161PI please refer to the
„Product Catalog Microcontrollers“, which summarizes all available microcontroller
variants.
Note: The ordering codes for Mask-ROM versions are defined for each product after
verification of the respective ROM code.
Data Sheet
2
1999-07
&3,
Introduction
The C161PI is a derivative of the Infineon C166 Family of 16-bit single-chip CMOS
microcontrollers. It combines high CPU performance (up to 8 million instructions per
second) with high peripheral functionality and enhanced IO-capabilities. The C161PI
derivative is especially suited for cost sensitive applications.
VDD VSS
VAREF VAGND
PORT0
16 bit
XTAL1
XTAL2
PORT1
16 bit
RSTIN
RSTOUT
NMI
Port 2
8 bit
C161PI
EA
Port 3
15 bit
Port 4
7 bit
ALE
RD
WR/WRL
Port 6
8 bit
Port 5
6 bit
Figure 1
Data Sheet
Logic Symbol
3
1999-07
&3,
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
P5.1/AN1
P5.0/AN0
VAGND
VAREF
P2.15/EX7IN
P2.14/EX6IN
P2.13/EX5IN
P2.12/EX4IN
P2.11/EX3IN
P2.10/EX2IN
P2.9/EX1IN
P2.8/EX0IN
P6.7/SDA2
P6.6/SCL1
P6.5/SDA1
P6.4/CS4
P6.3/CS3
P6.2/CS2
P6.1/CS1
P6.0/CS0
Pin Configuration MQFP Package
(top view)
C161PI
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
NMI
RSTOUT
RSTIN
VDD
VSS
P1H.7/A15
P1H.6/A14
P1H.5/A13
P1H.4/A12
P1H.3/A11
P1H.2/A10
P1H.1/A9
P1H.0/A8
VDD
VSS
P1L.7/A7
P1L.6/A6
P1L.5/A5
P1L.4/A4
P1L.3/A3
P1L.2/A2
P1L.1/A1
P1L.0/A0
P0H.7/AD15
P0H.6/AD14
P0H.5/AD13
P0H.4/AD12
P0H.3/AD11
P0H.2/AD10
P0H.1/AD9
P4.5/A21
P4.6/A22
RD
WR/WRL
READY
ALE
EA
VSS
VDD
P0L.0/AD0
P0L.1/AD1
P0L.2/AD2
P0L.3/AD3
P0L.4/AD4
P0L.5/AD5
P0L.6/AD6
P0L.7/AD7
VSS
VDD
P0H.0/AD8
P5.2/AN2
P5.3/AN3
P5.14/T4EUD
P5.15/T2EUD
VSS
XTAL1
XTAL2
VDD
P3.0/SCL0
P3.1/SDA0
P3.2/CAPIN
P3.3/T3OUT
P3.4/T3EUD
P3.5/T4IN
P3.6/T3IN
P3.7/T2IN
P3.8/MRST
P3.9/MTSR
P3.10/TxD0
P3.11/RxD0
P3.12/BHE/WRH
P3.13/SCLK
P3.15/CLKOUT/
FOUT
VSS
VDD
P4.0/A16
P4.1/A17
P4.2/A18
P4.3/A19
P4.4/A20
Figure 2
Data Sheet
4
1999-07
&3,
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
P5.3/AN3
P5.2/AN2
P5.1/AN1
P5.0/AN0
VAGND
VAREF
P2.15/EX7IN
P2.14/EX6IN
P2.13/EX5IN
P2.12/EX4IN
P2.11/EX3IN
P2.10/EX2IN
P2.9/EX1IN
P2.8/EX0IN
P6.7/SDA2
P6.6/SCL1
P6.5/SDA1
P6.4/CS4
P6.3/CS3
P6.2/CS2
P6.1/CS1
P6.0/CS0
NMI
RSTOUT
RSTIN
Pin Configuration TQFP Package
(top view)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
C161PI
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
VDD
VSS
P1H.7/A15
P1H.6/A14
P1H.5/A13
P1H.4/A12
P1H.3/A11
P1H.2/A10
P1H.1/A9
P1H.0/A8
VDD
VSS
P1L.7/A7
P1L.6/A6
P1L.5/A5
P1L.4/A4
P1L.3/A3
P1L.2/A2
P1L.1/A1
P1L.0/A0
P0H.7/AD15
P0H.6/AD14
P0H.5/AD13
P0H.4/AD12
P0H.3/AD11
P4.2/A18
P4.3/A19
P4.4/A20
P4.5/A21
P4.6/A22
RD
WR/WRL
READY
ALE
EA
VSS
VDD
P0L.0/AD0
P0L.1/AD1
P0L.2/AD2
P0L.3/AD3
P0L.4/AD4
P0L.5/AD5
P0L.6/AD6
P0L.7/AD7
VSS
VDD
P0H.0/AD8
P0H.1/AD9
P0H.2/AD10
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
P5.14/T4EUD
P5.15/T2EUD
VSS
XTAL1
XTAL2
VDD
P3.0/SCL0
P3.1/SDA0
P3.2/CAPIN
P3.3/T3OUT
P3.4/T3EUD
P3.5/T4IN
P3.6/T3IN
P3.7/T2IN
P3.8/MRST
P3.9/MTSR
P3.10/TxD0
P3.11/RxD0
P3.12/BHE/WRH
P3.13/SCLK
P3.15/CLKOUT/
FOUT
VSS
VDD
P4.0/A16
P4.1/A17
Figure 3
Data Sheet
5
1999-07
&3,
Table 1
Pin Definitions and Functions
Symbol Pin
Pin
Input Function
Num. Num. Outp.
TQFP MQFP
P5
I
P5.0
P5.1
P5.2
P5.3
P5.14
P5.15
97
98
99
100
1
2
99
100
1
2
3
4
I
I
I
I
I
I
Port 5 is a 6-bit input-only port with Schmitt-Trigger
characteristics. The pins of Port 5 also serve as (up to
4) analog input channels for the A/D converter, or they
serve as timer inputs:
AN0
AN1
AN2
AN3
T4EUD
GPT1 Timer T4 Ext. Up/Down Ctrl. Input
T2EUD
GPT1 Timer T5 Ext. Up/Down Ctrl. Input
XTAL1
4
6
I
XTAL1:
XTAL2
5
7
O
Data Sheet
Input to the oscillator amplifier and input to
the internal clock generator
XTAL2:
Output of the oscillator amplifier circuit.
To clock the device from an external source, drive
XTAL1, while leaving XTAL2 unconnected. Minimum
and maximum high/low and rise/fall times specified in
the AC Characteristics must be observed.
6
1999-07
&3,
Table 1
Pin Definitions and Functions (continued)
Symbol Pin
Pin
Input Function
Num. Num. Outp.
TQFP MQFP
P3
IO
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
7
8
9
10
11
12
9
10
11
12
13
14
I/O
I/O
I
O
I
I
P3.6
P3.7
13
14
15
16
I
I
P3.8
P3.9
P3.10
P3.11
P3.12
15
16
17
18
19
17
18
19
20
21
P3.13
P3.15
20
21
22
23
I/O
I/O
O
I/O
O
O
I/O
O
O
Port 3 is a 15-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For
a pin configured as input, the output driver is put into
high-impedance state. Port 3 outputs can be
configured as push/pull or open drain drivers. The input
threshold of Port 3 is selectable (TTL or special). The
following Port 3 pins also serve for alternate functions:
SCL0
I2C Bus Clock Line 0
SDA0
I2C Bus Data Line 0
CAPIN
GPT2 Register CAPREL Capture Input
T3OUT
GPT1 Timer T3 Toggle Latch Output
T3EUD
GPT1 Timer T3 External Up/Down Ctrl.Inp
T4IN
GPT1 Timer T4 Count/Gate/Reload/
Capture Input
T3IN
GPT1 Timer T3 Count/Gate Input
T2IN
GPT1 Timer T2 Count/Gate/Reload/
Capture Input
MRST
SSC Master-Rec. / Slave-Trans. Inp/Outp.
MTSR
SSC Master-Trans. / Slave-Rec. Outp/Inp.
T×D0
ASC0 Clock/Data Output (Async./Sync.)
R×D0
ASC0 Data Input (Async.) or I/O (Sync.)
External Memory High Byte Enable Signal,
BHE
External Memory High Byte Write Strobe
WRH
SCLK
SSC Master Clock Outp. / Slave Clock Inp.
CLKOUT System Clock Output (=CPU Clock)
FOUT
Programmable Frequency Output
Note: Pins P3.0 and P3.1 are open drain outputs only.
Data Sheet
7
1999-07
&3,
Table 1
Pin Definitions and Functions (continued)
Symbol Pin
Pin
Input Function
Num. Num. Outp.
TQFP MQFP
P4
IO
Port 4 is a 7-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For
a pin configured as input, the output driver is put into
high-impedance state. Port 4 outputs can be
configured as push/pull or open drain drivers. The input
threshold of Port 4 is selectable (TTL or special). Port 4
can be used to output the segment address lines:
A16
Least Significant Segment Address Line
A17
Segment Address Line
A18
Segment Address Line
A19
Segment Address Line
A20
Segment Address Line
A21
Segment Address Line
A22
Most Significant Segment Address Line
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
24
25
26
27
28
29
30
26
27
28
29
30
31
32
O
O
O
O
O
O
O
RD
31
33
O
External Memory Read Strobe. RD is activated for
every external instruction or data read access.
WR/
WRL
32
34
O
External Memory Write Strobe. In WR-mode this pin is
activated for every external data write access. In WRLmode this pin is activated for low byte data write
accesses on a 16-bit bus, and for every data write
access on an 8-bit bus. See WRCFG in register
SYSCON for mode selection.
READY 33
35
I
Ready Input. When the Ready function is enabled, a
high level at this pin during an external memory access
will force the insertion of memory cycle time waitstates
until the pin returns to a low level.
An internal pullup device will hold this pin high when
nothing is driving it.
ALE
36
O
Address Latch Enable Output. Can be used for latching
the address into external memory or an address latch
in the multiplexed bus modes.
34
Data Sheet
8
1999-07
&3,
Table 1
Pin Definitions and Functions (continued)
Symbol Pin
Pin
Input Function
Num. Num. Outp.
TQFP MQFP
EA
35
PORT0
P0L.0-7 3845
P0H.0-7 4855
PORT1
P1L.0-7 5663
P1H.0-7 6673
Data Sheet
37
I
External Access Enable pin. A low level at this pin
during and after Reset forces the C161PI to begin
instruction execution out of external memory. A high
level forces execution out of the internal program
memory.
"ROMless" versions must have this pin tied to ‘0’.
IO
PORT0 consists of the two 8-bit bidirectional I/O ports
P0L and P0H. It is bit-wise programmable for input or
output via direction bits. For a pin configured as input,
the output driver is put into high-impedance state.
In case of external bus configurations, PORT0 serves
as the address (A) and address/data (AD) bus in
multiplexed bus modes and as the data (D) bus in
demultiplexed bus modes.
Demultiplexed bus modes:
Data Path Width:
8-bit
16-bit
P0L.0 – P0L.7:
D0 – D7
D0 - D7
P0H.0 – P0H.7:
I/O
D8 - D15
Multiplexed bus modes:
Data Path Width:
8-bit
16-bit
P0L.0 – P0L.7:
AD0 – AD7 AD0 - AD7
P0H.0 – P0H.7:
A8 - A15
AD8 - AD15
IO
PORT1 consists of the two 8-bit bidirectional I/O ports
P1L and P1H. It is bit-wise programmable for input or
output via direction bits. For a pin configured as input,
the output driver is put into high-impedance state.
PORT1 is used as the 16-bit address bus (A) in
demultiplexed bus modes and also after switching from
a demultiplexed bus mode to a multiplexed bus mode.
4047
5057
5865
6875
9
1999-07
&3,
Table 1
Pin Definitions and Functions (continued)
Symbol Pin
Pin
Input Function
Num. Num. Outp.
TQFP MQFP
RSTIN
76
78
I/O
Reset Input with Schmitt-Trigger characteristics. A low
level at this pin while the oscillator is running resets the
C161PI. An internal pullup resistor permits power-on
reset using only a capacitor connected to 9SS.
A spike filter suppresses input pulses 100 ns safely pass the filter.
The minimum duration for a safe recognition should be
100 ns + 2 CPU clock cycles.
In bidirectional reset mode (enabled by setting bit
BDRSTEN in register SYSCON) the RSTIN line is
internally pulled low for the duration of the internal
reset sequence upon any reset (HW, SW, WDT).
See note below this table.
Note: To let the reset configuration of PORT0 settle
and to let the PLL lock a reset duration of ca.
1 ms is recommended.
RST
OUT
77
79
O
Internal Reset Indication Output. This pin is set to a low
level when the part is executing either a hardware-, a
software- or a watchdog timer reset. RSTOUT remains
low until the EINIT (end of initialization) instruction is
executed.
NMI
78
80
I
Non-Maskable Interrupt Input. A high to low transition
at this pin causes the CPU to vector to the NMI trap
routine. When the PWRDN (power down) instruction is
executed, the NMI pin must be low in order to force the
C161PI to go into power down mode. If NMI is high,
when PWRDN is executed, the part will continue to run
in normal mode.
If not used, pin NMI should be pulled high externally.
Data Sheet
10
1999-07
&3,
Table 1
Pin Definitions and Functions (continued)
Symbol Pin
Pin
Input Function
Num. Num. Outp.
TQFP MQFP
P6
P6.0
P6.1
P6.2
P6.3
P6.4
P6.5
P6.6
P6.7
IO
79
80
81
82
83
84
85
86
81
82
83
84
85
86
87
88
O
O
O
O
O
I/O
I/O
I/O
Port 6 is an 8-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For
a pin configured as input, the output driver is put into
high-impedance state. Port 6 outputs can be
configured as push/pull or open drain drivers.
The Port 6 pins also serve for alternate functions:
Chip Select 0 Output
CS0
Chip Select 1 Output
CS1
Chip Select 2 Output
CS2
Chip Select 3 Output
CS3
Chip Select 4 Output
CS4
SDA1
I2C Bus Data Line 1
SCL1
I2C Bus Clock Line 1
SDA2
I2C Bus Data Line 2
Note: Pins P6.7-5 are open drain outputs only.
P2
IO
P2.8
P2.9
P2.10
P2.11
P2.12
P2.13
P2.14
P2.15
87
88
89
90
91
92
93
94
89
90
91
92
93
94
95
96
I
I
I
I
I
I
I
I
Port 2 is an 8-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For
a pin configured as input, the output driver is put into
high-impedance state. Port 2 outputs can be
configured as push/pull or open drain drivers. The input
threshold of Port 2 is selectable (TTL or special).
The Port 2 pins also serve for alternate functions:
EX0IN
Fast External Interrupt 0 Input
EX1IN
Fast External Interrupt 1 Input
EX2IN
Fast External Interrupt 2 Input
EX3IN
Fast External Interrupt 3 Input
EX4IN
Fast External Interrupt 4 Input
EX5IN
Fast External Interrupt 5 Input
EX6IN
Fast External Interrupt 6 Input
EX7IN
Fast External Interrupt 7 Input
9AREF
9AGND
95
97
-
Reference voltage for the A/D converter.
96
98
-
Reference ground for the A/D converter.
Data Sheet
11
1999-07
&3,
Table 1
Pin Definitions and Functions (continued)
Symbol Pin
Pin
Input Function
Num. Num. Outp.
TQFP MQFP
9DD
6, 23,
37,
47,
65, 75
8, 25, 39,
49,
67, 77
Digital Supply Voltage:
+ 5 V or + 3 V during normal operation and idle mode.
≥ 2.5 V during power down mode
9SS
3, 22,
36,
46,
64, 74
5, 24, 38,
48,
66, 76
Digital Ground.
Note: The following behaviour differences must be observed when the bidirectional reset
is active:
• Bit BDRSTEN in register SYSCON cannot be changed after EINIT and is cleared
automatically after a reset.
• The reset indication flags always indicate a long hardware reset.
• The PORT0 configuration is treated like on a hardware reset. Especially the bootstrap
loader may be activated when P0L.4 is low.
• Pin RSTIN may only be connected to external reset devices with an open drain output
driver.
• A short hardware reset is extended to the duration of the internal reset sequence.
Data Sheet
12
1999-07
&3,
Functional Description
The architecture of the C161PI combines advantages of both RISC and CISC
processors and of advanced peripheral subsystems in a very well-balanced way. The
following block diagram gives an overview of the different on-chip components and of the
advanced, high bandwidth internal bus structure of the C161PI.
&&RUH
(no
internal
ROM)
32
16
Data
&38&RUH
&38
Instr./Data
16
Data
Dual Port
Note: All time specifications refer to a CPU clock of 25 MHz
(see definition in the AC Characteristics section).
Internal
RAM
.%\WH
16
OSC
Oscillator
(input: 16MHz;
(16MHz)
prescaler
PLLdrive)
or direct
XTAL
3(&
I²C-Bus
Interface
XRAM
2 KByte
Port 6
8
Port 0
16
XBUS (16-bit NON MUX Data / Addresses)
External Instr./Data
Interrupt Controller
16
Watchdog
11 ext. IR
Interrupt Bus
16
Peripheral Data
External
Bus
(MUX
only) &
XBUS
Control,
CS Logic
(4 CS)
4Channel
10-bit
8-bit
ADC
USART
Sync.
Channel
(SPI)
GPT 1
GPT 2
T2
T5
ASC
SSC
T3
T6
BRG
BRG
T4
RTC
7
Port 4
Port 1
Port 5
Port 3
Port 2
C161RI V0.1
16
Figure 4
Data Sheet
15
6
8
Block Diagram
13
1999-07
&3,
Memory Organization
The memory space of the C161PI is configured in a Von Neumann architecture which
means that code memory, data memory, registers and I/O ports are organized within the
same linear address space which includes 16 MBytes. The entire memory space can be
accessed bytewise or wordwise. Particular portions of the on-chip memory have
additionally been made directly bitaddressable.
1 KByte of on-chip Internal RAM (IRAM) is provided as a storage for user defined
variables, for the system stack, general purpose register banks and even for code. A
register bank can consist of up to 16 wordwide (R0 to R15) and/or bytewide (RL0, RH0,
…, RL7, RH7) so-called General Purpose Registers (GPRs).
1024 bytes (2 * 512 bytes) of the address space are reserved for the Special Function
Register areas (SFR space and ESFR space). SFRs are wordwide registers which are
used for controlling and monitoring functions of the different on-chip units. Unused SFR
addresses are reserved for future members of the C166 Family.
2 KBytes of on-chip Extension RAM (XRAM) are provided to store user data, user
stacks, or code. The XRAM is accessed like external memory and therefore cannot be
used for the system stack or for register banks and is not bitaddressable. The XRAM
permits 16-bit accesses with maximum speed.
In order to meet the needs of designs where more memory is required than is provided
on chip, up to 8 MBytes of external RAM and/or ROM can be connected to the
microcontroller.
Data Sheet
14
1999-07
&3,
External Bus Controller
All of the external memory accesses are performed by a particular on-chip External Bus
Controller (EBC). It can be programmed either to Single Chip Mode when no external
memory is required, or to one of four different external memory access modes, which are
as follows:
–
–
–
–
16-/18-/20-/23-bit Addresses, 16-bit Data, Demultiplexed
16-/18-/20-/23-bit Addresses, 16-bit Data, Multiplexed
16-/18-/20-/23-bit Addresses, 8-bit Data, Multiplexed
16-/18-/20-/23-bit Addresses, 8-bit Data, Demultiplexed
In the demultiplexed bus modes, addresses are output on PORT1 and data is input/
output on PORT0 or P0L, respectively. In the multiplexed bus modes both addresses
and data use PORT0 for input/output.
Important timing characteristics of the external bus interface (Memory Cycle Time,
Memory Tri-State Time, Length of ALE and Read Write Delay) have been made
programmable to allow the user the adaption of a wide range of different types of
memories and external peripherals.
In addition, up to 4 independent address windows may be defined (via register pairs
ADDRSELx / BUSCONx) which allow to access different resources with different bus
characteristics. These address windows are arranged hierarchically where BUSCON4
overrides BUSCON3 and BUSCON2 overrides BUSCON1. All accesses to locations not
covered by these 4 address windows are controlled by BUSCON0.
Up to 5 external CS signals (4 windows plus default) can be generated in order to save
external glue logic. The C161PI offers the possibility to switch the CS outputs to an
unlatched mode. In this mode the internal filter logic is switched off and the CS signals
are directly generated from the address. The unlatched CS mode is enabled by setting
CSCFG (SYSCON.6).
Access to very slow memories is supported via a particular ‘Ready’ function.
For applications which require less than 8 MBytes of external memory space, this
address space can be restricted to 1 MByte, 256 KByte or to 64 KByte. In this case Port 4
outputs four, two or no address lines at all. It outputs all 7 address lines, if an address
space of 8 MBytes is used.
Data Sheet
15
1999-07
&3,
Central Processing Unit (CPU)
The main core of the CPU consists of a 4-stage instruction pipeline, a 16-bit arithmetic
and logic unit (ALU) and dedicated SFRs. Additional hardware has been spent for a
separate multiply and divide unit, a bit-mask generator and a barrel shifter.
Based on these hardware provisions, most of the C161PI’s instructions can be executed
in just one machine cycle which requires 2 CPU clocks (4 TCL). For example, shift and
rotate instructions are always processed during one machine cycle independent of the
number of bits to be shifted. All multiple-cycle instructions have been optimized so that
they can be executed very fast as well: branches in 2 cycles, a 16 × 16 bit multiplication
in 5 cycles and a 32-/16 bit division in 10 cycles. Another pipeline optimization, the socalled ‘Jump Cache’, reduces the execution time of repeatedly performed jumps in a loop
from 2 cycles to 1 cycle.
Figure 5
Data Sheet
CPU Block Diagram
16
1999-07
&3,
The CPU has a register context consisting of up to 16 wordwide GPRs at its disposal.
These 16 GPRs are physically allocated within the on-chip RAM area. A Context Pointer
(CP) register determines the base address of the active register bank to be accessed by
the CPU at any time. The number of register banks is only restricted by the available
internal RAM space. For easy parameter passing, a register bank may overlap others.
A system stack of up to 1024 bytes is provided as a storage for temporary data. The
system stack is allocated in the on-chip RAM area, and it is accessed by the CPU via the
stack pointer (SP) register. Two separate SFRs, STKOV and STKUN, are implicitly
compared against the stack pointer value upon each stack access for the detection of a
stack overflow or underflow.
The high performance offered by the hardware implementation of the CPU can efficiently
be utilized by a programmer via the highly efficient C161PI instruction set which includes
the following instruction classes:
–
–
–
–
–
–
–
–
–
–
–
–
Arithmetic Instructions
Logical Instructions
Boolean Bit Manipulation Instructions
Compare and Loop Control Instructions
Shift and Rotate Instructions
Prioritize Instruction
Data Movement Instructions
System Stack Instructions
Jump and Call Instructions
Return Instructions
System Control Instructions
Miscellaneous Instructions
The basic instruction length is either 2 or 4 bytes. Possible operand types are bits, bytes
and words. A variety of direct, indirect or immediate addressing modes are provided to
specify the required operands.
Data Sheet
17
1999-07
&3,
Interrupt System
With an interrupt response time within a range from just 5 to 12 CPU clocks (in case of
internal program execution), the C161PI is capable of reacting very fast to the
occurrence of non-deterministic events.
The architecture of the C161PI supports several mechanisms for fast and flexible
response to service requests that can be generated from various sources internal or
external to the microcontroller. Any of these interrupt requests can be programmed to
being serviced by the Interrupt Controller or by the Peripheral Event Controller (PEC).
In contrast to a standard interrupt service where the current program execution is
suspended and a branch to the interrupt vector table is performed, just one cycle is
‘stolen’ from the current CPU activity to perform a PEC service. A PEC service implies a
single byte or word data transfer between any two memory locations with an additional
increment of either the PEC source or the destination pointer. An individual PEC transfer
counter is implicity decremented for each PEC service except when performing in the
continuous transfer mode. When this counter reaches zero, a standard interrupt is
performed to the corresponding source related vector location. PEC services are very
well suited, for example, for supporting the transmission or reception of blocks of data.
The C161PI has 8 PEC channels each of which offers such fast interrupt-driven data
transfer capabilities.
A separate control register which contains an interrupt request flag, an interrupt enable
flag and an interrupt priority bitfield exists for each of the possible interrupt sources. Via
its related register, each source can be programmed to one of sixteen interrupt priority
levels. Once having been accepted by the CPU, an interrupt service can only be
interrupted by a higher prioritized service request. For the standard interrupt processing,
each of the possible interrupt sources has a dedicated vector location.
Fast external interrupt inputs are provided to service external interrupts with high
precision requirements. These fast interrupt inputs feature programmable edge
detection (rising edge, falling edge or both edges).
Software interrupts are supported by means of the ‘TRAP’ instruction in combination with
an individual trap (interrupt) number.
The following table shows all of the possible C161PI interrupt sources and the
corresponding hardware-related interrupt flags, vectors, vector locations and trap
(interrupt) numbers.
Note: Interrupt nodes which are not used by associated peripherals, may be used to
generate software controlled interrupt requests by setting the respective interrupt
request bit (xIR).
Data Sheet
18
1999-07
&3,
Table 2
C161PI Interrupt Nodes
Source of Interrupt or Request
PEC Service Request Flag
Enable
Flag
Interrupt
Vector
Vector
Location
Trap
Number
External Interrupt 0
CC8IR
CC8IE
CC8INT
00’0060H
18H
External Interrupt 1
CC9IR
CC9IE
CC9INT
00’0064H
19H
External Interrupt 2
CC10IR
CC10IE
CC10INT
00’0068H
1AH
External Interrupt 3
CC11IR
CC11IE
CC11INT
00’006CH
1BH
External Interrupt 4
CC12IR
CC12IE
CC12INT
00’0070H
1CH
External Interrupt 5
CC13IR
CC13IE
CC13INT
00’0074H
1DH
External Interrupt 6
CC14IR
CC14IE
CC14INT
00’0078H
1EH
External Interrupt 7
CC15IR
CC15IE
CC15INT
00’007CH
1FH
GPT1 Timer 2
T2IR
T2IE
T2INT
00’0088H
22H
GPT1 Timer 3
T3IR
T3IE
T3INT
00’008CH
23H
GPT1 Timer 4
T4IR
T4IE
T4INT
00’0090H
24H
GPT2 Timer 5
T5IR
T5IE
T5INT
00’0094H
25H
GPT2 Timer 6
T6IR
T6IE
T6INT
00’0098H
26H
GPT2 CAPREL
Register
CRIR
CRIE
CRINT
00’009CH
27H
A/D Conversion
Complete
ADCIR
ADCIE
ADCINT
00’00A0H
28H
A/D Overrun Error
ADEIR
ADEIE
ADEINT
00’00A4H
29H
ASC0 Transmit
S0TIR
S0TIE
S0TINT
00’00A8H
2AH
ASC0 Transmit Buffer
S0TBIR
S0TBIE
S0TBINT
00’011CH
47H
ASC0 Receive
S0RIR
S0RIE
S0RINT
00’00ACH
2BH
ASC0 Error
S0EIR
S0EIE
S0EINT
00’00B0H
2CH
SSC Transmit
SCTIR
SCTIE
SCTINT
00’00B4H
2DH
SSC Receive
SCRIR
SCRIE
SCRINT
00’00B8H
2EH
SSC Error
SCEIR
SCEIE
SCEINT
00’00BCH
2FH
I2C Data Transfer
Event
XP0IR
XP0IE
XP0INT
00’0100H
40H
I2C Protocol Event
XP1IR
XP1IE
XP1INT
00’0104H
41H
X-Peripheral Node 2
XP2IR
XP2IE
XP2INT
00’0108H
42H
PLL Unlock / RTC
XP3IR
XP3IE
XP3INT
00’010CH
43H
Data Sheet
19
1999-07
&3,
The C161PI also provides an excellent mechanism to identify and to process exceptions
or error conditions that arise during run-time, so-called ‘Hardware Traps’. Hardware
traps cause immediate non-maskable system reaction which is similar to a standard
interrupt service (branching to a dedicated vector table location). The occurence of a
hardware trap is additionally signified by an individual bit in the trap flag register (TFR).
Except when another higher prioritized trap service is in progress, a hardware trap will
interrupt any actual program execution. In turn, hardware trap services can normally not
be interrupted by standard or PEC interrupts.
The following table shows all of the possible exceptions or error conditions that can arise
during run-time:
Table 3
Hardware Trap Summary
Exception Condition
Trap
Flag
Reset Functions:
Hardware Reset
Software Reset
Watchdog Timer Overflow
Trap
Vector
Vector
Location
Trap
Trap
Number Prio
RESET
RESET
RESET
00’0000H
00’0000H
00’0000H
00H
00H
00H
III
III
III
Class A Hardware Traps:
Non-Maskable Interrupt
Stack Overflow
Stack Underflow
NMI
STKOF
STKUF
NMITRAP 00’0008H
STOTRAP 00’0010H
STUTRAP 00’0018H
02H
04H
06H
II
II
II
Class B Hardware Traps:
Undefined Opcode
Protected Instruction Fault
Illegal Word Operand Access
Illegal Instruction Access
Illegal External Bus Access
UNDOPC
PRTFLT
ILLOPA
ILLINA
ILLBUS
BTRAP
BTRAP
BTRAP
BTRAP
BTRAP
0AH
0AH
0AH
0AH
0AH
I
I
I
I
I
00’0028H
00’0028H
00’0028H
00’0028H
00’0028H
Reserved
[2CH – 3CH] [0BH –
0FH]
Software Traps:
TRAP Instruction
Any
Any
[00’0000H – [00H –
00’01FCH] 7FH]
in steps
of 4H
Data Sheet
20
Current
CPU
Priority
1999-07
&3,
General Purpose Timer (GPT) Unit
The GPT unit represents a very flexible multifunctional timer/counter structure which
may be used for many different time related tasks such as event timing and counting,
pulse width and duty cycle measurements, pulse generation, or pulse multiplication.
The GPT unit incorporates five 16-bit timers which are organized in two separate
modules, GPT1 and GPT2. Each timer in each module may operate independently in a
number of different modes, or may be concatenated with another timer of the same
module.
Each of the three timers T2, T3, T4 of module GPT1 can be configured individually for
one of four basic modes of operation, which are Timer, Gated Timer, Counter, and
Incremental Interface Mode. In Timer Mode, the input clock for a timer is derived from
the CPU clock, divided by a programmable prescaler, while Counter Mode allows a timer
to be clocked in reference to external events.
Pulse width or duty cycle measurement is supported in Gated Timer Mode, where the
operation of a timer is controlled by the ‘gate’ level on an external input pin. For these
purposes, each timer has one associated port pin (TxIN) which serves as gate or clock
input. The maximum resolution of the timers in module GPT1 is 16 TCL.
The count direction (up/down) for each timer is programmable by software or may
additionally be altered dynamically by an external signal on a port pin (TxEUD) to
facilitate eg. position tracking.
In Incremental Interface Mode the GPT1 timers (T2, T3, T4) can be directly connected
to the incremental position sensor signals A and B via their respective inputs TxIN and
TxEUD. Direction and count signals are internally derived from these two input signals,
so the contents of the respective timer Tx corresponds to the sensor position. The third
position sensor signal TOP0 can be connected to an interrupt input.
Timer T3 has an output toggle latch (T3OTL) which changes its state on each timer overflow/underflow. The state of this latch may be output on a port pin (T3OUT) eg. for time
out monitoring of external hardware components, or may be used internally to clock
timers T2 and T4 for measuring long time periods with high resolution.
In addition to their basic operating modes, timers T2 and T4 may be configured as reload
or capture registers for timer T3. When used as capture or reload registers, timers T2
and T4 are stopped. The contents of timer T3 are captured into T2 or T4 in response to
a signal at their associated input pins (TxIN). Timer T3 is reloaded with the contents of
T2 or T4 triggered either by an external signal or by a selectable state transition of its
toggle latch T3OTL. When both T2 and T4 are configured to alternately reload T3 on
opposite state transitions of T3OTL with the low and high times of a PWM signal, this
signal can be constantly generated without software intervention.
Data Sheet
21
1999-07
&3,
T2EUD
fCPU
U/D
2n : 1
T2IN
fCPU
Interrupt
Request
GPT1 Timer T2
T2
Mode
Control
Reload
Capture
Interrupt
Request
2n : 1
Toggle FF
T3
Mode
Control
T3IN
GPT1 Timer T3
T3OTL
T3OUT
U/D
T3EUD
Other
Timers
Capture
Reload
T4IN
fCPU
2n : 1
T4
Mode
Control
GPT1 Timer T4
U/D
T4EUD
Figure 6
Interrupt
Request
MCT02141
Block Diagram of GPT1
With its maximum resolution of 8 TCL, the GPT2 module provides precise event control
and time measurement. It includes two timers (T5, T6) and a capture/reload register
(CAPREL). Both timers can be clocked with an input clock which is derived from the CPU
clock via a programmable prescaler. The count direction (up/down) for each timer is
programmable by software. Concatenation of the timers is supported via the output
toggle latch (T6OTL) of timer T6, which changes its state on each timer overflow/
underflow.
Data Sheet
22
1999-07
&3,
The state of this latch may be used to clock timer T5. The overflows/underflows of timer
T6 can additionally be used to cause a reload from the CAPREL register. The CAPREL
register may capture the contents of timer T5 based on an external signal transition on
the corresponding port pin (CAPIN), and timer T5 may optionally be cleared after the
capture procedure. This allows absolute time differences to be measured or pulse
multiplication to be performed without software overhead.
The capture trigger (timer T5 to CAPREL) may also be generated upon transitions of
GPT1 timer T3’s inputs T3IN and/or T3EUD. This is especially advantageous when T3
operates in Incremental Interface Mode.
fCPU
2n : 1
T5
Mode
Control
U/D
Interrupt
Request
GPT2 Timer T5
Clear
Capture
Interrupt
Request
T3
MUX
CAPIN
GPT2 CAPREL
Interrupt
Request
CT3
GPT2 Timer T6
fCPU
2n :
1
T6
Mode
Control
T6OTL
T6OUT
U/D
Other
Timers
Mcb03999C.vsd
Figure 7
Data Sheet
Block Diagram of GPT2
23
1999-07
&3,
Real Time Clock
The Real Time Clock (RTC) module of the C161PI consists of a chain of 3 divider blocks,
a fixed 8:1 divider, the reloadable 16-bit timer T14, and the 32-bit RTC timer (accessible
via registers RTCH and RTCL). The RTC module is directly clocked with the on-chip
oscillator frequency divided by 32 via a separate clock driver (IRTC = IOSC / 32) and is
therefore independent from the selected clock generation mode of the C161PI. All timers
count up.
The RTC module can be used for different purposes:
• System clock to determine the current time and date
• Cyclic time based interrupt
• 48-bit timer for long term measurements
T14REL
Reload
T14
8:1
fRTC
Interrupt
Request
RTCL
Figure 8
RTCL
RTC Block Diagram
Note: The registers associated with the RTC are not effected by a reset in order to
maintain the correct system time even when intermediate resets are executed.
Data Sheet
24
1999-07
&3,
A/D Converter
For analog signal measurement, a 10-bit A/D converter with 4 multiplexed input channels
and a sample and hold circuit has been integrated on-chip. It uses the method of
successive approximation. The sample time (for loading the capacitors) and the
conversion time is programmable and can so be adjusted to the external circuitry.
Overrun error detection/protection is provided for the conversion result register
(ADDAT): either an interrupt request will be generated when the result of a previous
conversion has not been read from the result register at the time the next conversion is
complete, or the next conversion is suspended in such a case until the previous result
has been read.
For applications which require less than 4 analog input channels, the remaining channel
inputs can be used as digital input port pins.
The A/D converter of the C161PI supports four different conversion modes. In the
standard Single Channel conversion mode, the analog level on a specified channel is
sampled once and converted to a digital result. In the Single Channel Continuous mode,
the analog level on a specified channel is repeatedly sampled and converted without
software intervention. In the Auto Scan mode, the analog levels on a prespecified
number of channels are sequentially sampled and converted. In the Auto Scan
Continuous mode, the number of prespecified channels is repeatedly sampled and
converted. In addition, the conversion of a specific channel can be inserted (injected) into
a running sequence without disturbing this sequence. This is called Channel Injection
Mode.
The Peripheral Event Controller (PEC) may be used to automatically store the
conversion results into a table in memory for later evaluation, without requiring the
overhead of entering and exiting interrupt routines for each data transfer.
After each reset and also during normal operation the ADC automatically performs
calibration cycles. This automatic self-calibration constantly adjusts the converter to
changing operating conditions (e.g. temperature) and compensates process variations.
These calibration cycles are part of the conversion cycle, so they do not affect the normal
operation of the A/D converter.
In order to decouple analog inputs from digital noise and to avoid input trigger noise
those pins used for analog input can be disconnected from the digital IO or input stages
under software control. This can be selected for each pin separately via registers
P5DIDIS (Port 5 Digital Input Disable).
Data Sheet
25
1999-07
&3,
Serial Channels
Serial communication with other microcontrollers, processors, terminals or external
peripheral components is provided by two serial interfaces with different functionality, an
Asynchronous/Synchronous Serial Channel (ASC0) and a High-Speed Synchronous
Serial Channel (SSC).
The ASC0 is upward compatible with the serial ports of the Infineon 8-bit microcontroller
families and supports full-duplex asynchronous communication at up to 780 KBaud and
half-duplex synchronous communication at up to 3.1 MBaud @ 25 MHz CPU clock.
A dedicated baud rate generator allows to set up all standard baud rates without
oscillator tuning. For transmission, reception and error handling 4 separate interrupt
vectors are provided. In asynchronous mode, 8- or 9-bit data frames are transmitted or
received, preceded by a start bit and terminated by one or two stop bits. For
multiprocessor communication, a mechanism to distinguish address from data bytes has
been included (8-bit data plus wake up bit mode).
In synchronous mode, the ASC0 transmits or receives bytes (8 bits) synchronously to a
shift clock which is generated by the ASC0. The ASC0 always shifts the LSB first. A loop
back option is available for testing purposes.
A number of optional hardware error detection capabilities has been included to increase
the reliability of data transfers. A parity bit can automatically be generated on
transmission or be checked on reception. Framing error detection allows to recognize
data frames with missing stop bits. An overrun error will be generated, if the last
character received has not been read out of the receive buffer register at the time the
reception of a new character is complete.
The SSC supports full-duplex synchronous communication at up to 6.25 Mbaud @
25 MHz CPU clock. It may be configured so it interfaces with serially linked peripheral
components. A dedicated baud rate generator allows to set up all standard baud rates
without oscillator tuning. For transmission, reception and error handling 3 separate
interrupt vectors are provided.
The SSC transmits or receives characters of 2...16 bits length synchronously to a shift
clock which can be generated by the SSC (master mode) or by an external master (slave
mode). The SSC can start shifting with the LSB or with the MSB and allows the selection
of shifting and latching clock edges as well as the clock polarity.
A number of optional hardware error detection capabilities has been included to increase
the reliability of data transfers. Transmit and receive error supervise the correct handling
of the data buffer. Phase and baudrate error detect incorrect serial data.
Data Sheet
26
1999-07
&3,
I2C Module
The integrated I2C Bus Module handles the transmission and reception of frames over
the two-line I2C bus in accordance with the I2C Bus specification. The on-chip I2C Module
can receive and transmit data using 7-bit or 10-bit addressing and it can operate in slave
mode, in master mode or in multi-master mode.
Several physical interfaces (port pins) can be established under software control. Data
can be transferred at speeds up to 400 Kbit/sec.
Two interrupt nodes dedicated to the I2C module allow efficient interrupt service and also
support operation via PEC transfers.
Note: The port pins associated with the I2C interfaces feature open drain drivers only, as
required by the I2C specification.
Watchdog Timer
The Watchdog Timer represents one of the fail-safe mechanisms which have been
implemented to prevent the controller from malfunctioning for longer periods of time.
The Watchdog Timer is always enabled after a reset of the chip, and can only be
disabled in the time interval until the EINIT (end of initialization) instruction has been
executed. Thus, the chip’s start-up procedure is always monitored. The software has to
be designed to service the Watchdog Timer before it overflows. If, due to hardware or
software related failures, the software fails to do so, the Watchdog Timer overflows and
generates an internal hardware reset and pulls the RSTOUT pin low in order to allow
external hardware components to be reset.
The Watchdog Timer is a 16-bit timer, clocked with the system clock divided either by 2
or by 128. The high byte of the Watchdog Timer register can be set to a prespecified
reload value (stored in WDTREL) in order to allow further variation of the monitored time
interval. Each time it is serviced by the application software, the high byte of the
Watchdog Timer is reloaded. Thus, time intervals between 20 µs and 336 ms can be
monitored (@ 25 MHz).
The default Watchdog Timer interval after reset is 5.24 ms (@ 25 MHz).
Data Sheet
27
1999-07
&3,
Parallel Ports
The C161PI provides up to 76 IO lines which are organized into six input/output ports
and one input port. All port lines are bit-addressable, and all input/output lines are
individually (bit-wise) programmable as inputs or outputs via direction registers. The I/O
ports are true bidirectional ports which are switched to high impedance state when
configured as inputs. The output drivers of three IO ports can be configured (pin by pin)
for push/pull operation or open-drain operation via control registers. The other IO ports
operate in push/pull mode, except for the I²C interface pins which are open drain pins
only. During the internal reset, all port pins are configured as inputs.
All port lines have programmable alternate input or output functions associated with
them. All port lines that are not used for these alternate functions may be used as general
purpose IO lines.
PORT0 and PORT1 may be used as address and data lines when accessing external
memory, while Port 4 outputs the additional segment address bits A22/19/17...A16 in
systems where segmentation is enabled to access more than 64 KBytes of memory.
Port 3 includes alternate functions of timers, serial interfaces, the optional bus control
signal BHE and the system clock output CLKOUT (or the programmable frequency
output FOUT).
Port 5 is used for the analog input channels to the A/D converter or timer control signals.
Port 6 provides the optional chip select signals and interface lines for the I²C module.
The edge characteristics (transition time) of the C161PI’s port drivers can be selected
via the Port Driver Control Register (PDCR).
Data Sheet
28
1999-07
&3,
Instruction Set Summary
The table below lists the instructions of the C161PI in a condensed way.
The various addressing modes that can be used with a specific instruction, the operation
of the instructions, parameters for conditional execution of instructions, and the opcodes
for each instruction can be found in the “C166 Family Instruction Set Manual”.
This document also provides a detailled description of each instruction.
Table 4
Mnemonic
ADD(B)
ADDC(B)
SUB(B)
SUBC(B)
MUL(U)
DIV(U)
DIVL(U)
CPL(B)
NEG(B)
AND(B)
OR(B)
XOR(B)
BCLR
BSET
BMOV(N)
BAND, BOR,
BXOR
BCMP
BFLDH/L
CMP(B)
CMPD1/2
CMPI1/2
PRIOR
SHL / SHR
ROL / ROR
ASHR
Data Sheet
Instruction Set Summary
Description
Add word (byte) operands
Add word (byte) operands with Carry
Subtract word (byte) operands
Subtract word (byte) operands with Carry
(Un)Signed multiply direct GPR by direct GPR (16-16-bit)
(Un)Signed divide register MDL by direct GPR (16-/16-bit)
(Un)Signed long divide reg. MD by direct GPR (32-/16-bit)
Complement direct word (byte) GPR
Negate direct word (byte) GPR
Bitwise AND, (word/byte operands)
Bitwise OR, (word/byte operands)
Bitwise XOR, (word/byte operands)
Clear direct bit
Set direct bit
Move (negated) direct bit to direct bit
AND/OR/XOR direct bit with direct bit
Bytes
2/4
2/4
2/4
2/4
2
2
2
2
2
2/4
2/4
2/4
2
2
4
4
Compare direct bit to direct bit
Bitwise modify masked high/low byte of bit-addressable
direct word memory with immediate data
Compare word (byte) operands
Compare word data to GPR and decrement GPR by 1/2
Compare word data to GPR and increment GPR by 1/2
Determine number of shift cycles to normalize direct
word GPR and store result in direct word GPR
Shift left/right direct word GPR
Rotate left/right direct word GPR
Arithmetic (sign bit) shift right direct word GPR
4
4
29
2/4
2/4
2/4
2
2
2
2
1999-07
&3,
Table 4
Instruction Set Summary (continued)
Mnemonic
MOV(B)
MOVBS
MOVBZ
JMPA, JMPI,
JMPR
JMPS
J(N)B
JBC
JNBS
CALLA, CALLI,
CALLR
CALLS
PCALL
TRAP
PUSH, POP
SCXT
RET
RETS
RETP
RETI
SRST
IDLE
PWRDN
SRVWDT
DISWDT
EINIT
ATOMIC
EXTR
EXTP(R)
EXTS(R)
NOP
Data Sheet
Description
Move word (byte) data
Move byte operand to word operand with sign extension
Move byte operand to word operand. with zero extension
Jump absolute/indirect/relative if condition is met
Bytes
2/4
2/4
2/4
4
Jump absolute to a code segment
Jump relative if direct bit is (not) set
Jump relative and clear bit if direct bit is set
Jump relative and set bit if direct bit is not set
Call absolute/indirect/relative subroutine if condition is met
4
4
4
4
4
Call absolute subroutine in any code segment
Push direct word register onto system stack and call
absolute subroutine
Call interrupt service routine via immediate trap number
Push/pop direct word register onto/from system stack
Push direct word register onto system stack und update
register with word operand
Return from intra-segment subroutine
Return from inter-segment subroutine
Return from intra-segment subroutine and pop direct
word register from system stack
Return from interrupt service subroutine
Software Reset
Enter Idle Mode
Enter Power Down Mode (supposes NMI-pin being low)
Service Watchdog Timer
Disable Watchdog Timer
Signify End-of-Initialization on RSTOUT-pin
Begin ATOMIC sequence
Begin EXTended Register sequence
Begin EXTended Page (and Register) sequence
Begin EXTended Segment (and Register) sequence
Null operation
4
4
30
2
2
4
2
2
2
2
4
4
4
4
4
4
2
2
2/4
2/4
2
1999-07
&3,
Special Function Registers Overview
The following table lists all SFRs which are implemented in the C161PI in alphabetical
order.
Bit-addressable SFRs are marked with the letter “b” in column “Name”. SFRs within the
Extended SFR-Space (ESFRs) are marked with the letter “E” in column “Physical
Address”. Registers within on-chip X-Peripherals (I²C) are marked with the letter “X” in
column “Physical Address”.
An SFR can be specified via its individual mnemonic name. Depending on the selected
addressing mode, an SFR can be accessed via its physical address (using the Data
Page Pointers), or via its short 8-bit address (without using the Data Page Pointers).
Table 5
Name
C161PI Registers, Ordered by Name
Physical
Address
8-Bit Description
Addr.
Reset
Value
ADCIC
b FF98H
CCH
A/D Converter End of Conversion
Interrupt Control Register
0000H
ADCON
b FFA0H
D0H
A/D Converter Control Register
0000H
ADDAT
FEA0H
50H
A/D Converter Result Register
0000H
ADDAT2
F0A0H
E 50H
A/D Converter 2 Result Register
0000H
ADDRSEL1
FE18H
0CH
Address Select Register 1
0000H
ADDRSEL2
FE1AH
0DH
Address Select Register 2
0000H
ADDRSEL3
FE1CH
0EH
Address Select Register 3
0000H
ADDRSEL4
FE1EH
0FH
Address Select Register 4
0000H
b FF9AH
CDH
A/D Converter Overrun Error Interrupt
Control Register
0000H
BUSCON0 b FF0CH
86H
Bus Configuration Register 0
0000H
BUSCON1 b FF14H
8AH
Bus Configuration Register 1
0000H
BUSCON2 b FF16H
8BH
Bus Configuration Register 2
0000H
BUSCON3 b FF18H
8CH
Bus Configuration Register 3
0000H
BUSCON4 b FF1AH
8DH
Bus Configuration Register 4
0000H
CAPREL
FE4AH
25H
GPT2 Capture/Reload Register
0000H
CC8IC
b FF88H
C4H
External Interrupt 0 Control Register
0000H
CC9IC
b FF8AH
C5H
External Interrupt 1 Control Register
0000H
CC10IC
b FF8CH
C6H
External Interrupt 2 Control Register
0000H
CC11IC
b FF8EH
C7H
External Interrupt 3 Control Register
0000H
ADEIC
Data Sheet
31
1999-07
&3,
Table 5
Name
C161PI Registers, Ordered by Name (continued)
Physical
Address
8-Bit Description
Addr.
Reset
Value
CC12IC
b FF90H
C8H
External Interrupt 4 Control Register
0000H
CC13IC
b FF92H
C9H
External Interrupt 5 Control Register
0000H
CC14IC
b FF94H
CAH
External Interrupt 6 Control Register
0000H
CC15IC
b FF96H
CBH
External Interrupt 7 Control Register
0000H
FE10H
08H
CPU Context Pointer Register
FC00H
b FF6AH
B5H
GPT2 CAPREL Interrupt Ctrl. Register
0000H
FE08H
04H
CPU Code Segment Pointer Register
(8 bits, not directly writeable)
0000H
DP0L
b F100H
E 80H
P0L Direction Control Register
00H
DP0H
b F102H
E 81H
P0H Direction Control Register
00H
DP1L
b F104H
E 82H
P1L Direction Control Register
00H
DP1H
b F106H
E 83H
P1H Direction Control Register
00H
DP2
b FFC2H
E1H
Port 2 Direction Control Register
0000H
DP3
b FFC6H
E3H
Port 3 Direction Control Register
0000H
DP4
b FFCAH
E5H
Port 4 Direction Control Register
00H
DP6
b FFCEH
E7H
Port 6 Direction Control Register
00H
DPP0
FE00H
00H
CPU Data Page Pointer 0 Register (10
bits)
0000H
DPP1
FE02H
01H
CPU Data Page Pointer 1 Reg. (10 bits)
0001H
DPP2
FE04H
02H
CPU Data Page Pointer 2 Reg. (10 bits)
0002H
DPP3
FE06H
03H
CPU Data Page Pointer 3 Reg. (10 bits)
0003H
b F1C0H
E E0H
External Interrupt Control Register
0000H
CP
CRIC
CSP
EXICON
ICADR
ED06H
X ---
I²C Address Register
0XXXH
ICCFG
ED00H
X ---
I²C Configuration Register
XX00H
ICCON
ED02H
X ---
I²C Control Register
0000H
ICRTB
ED08H
X ---
I²C Receive/Transmit Buffer
ICST
ED04H
X ---
I²C Status Register
0000H
IDCHIP
F07CH
E 3EH
Identifier
09XXH
IDMANUF
F07EH
E 3FH
Identifier
1820H
IDMEM
F07AH
E 3DH
Identifier
0000H
Data Sheet
32
XXH
1999-07
&3,
Table 5
C161PI Registers, Ordered by Name (continued)
Name
Physical
Address
IDPROG
F078H
E 3CH
Identifier
0000H
ISNC
b F1DEH
E EFH
Interrupt Subnode Control Register
0000H
MDC
b FF0EH
87H
CPU Multiply Divide Control Register
0000H
MDH
FE0CH
06H
CPU Multiply Divide Reg. – High Word
0000H
MDL
FE0EH
07H
CPU Multiply Divide Reg. – Low Word
0000H
ODP2
b F1C2H
E E1H
Port 2 Open Drain Control Register
0000H
ODP3
b F1C6H
E E3H
Port 3 Open Drain Control Register
0000H
ODP6
b F1CEH
E E7H
Port 6 Open Drain Control Register
00H
ONES
b FF1EH
8FH
Constant Value 1’s Register (read only)
FFFFH
P0L
b FF00H
80H
Port 0 Low Reg. (Lower half of PORT0)
00H
P0H
b FF02H
81H
Port 0 High Reg. (Upper half of PORT0)
00H
P1L
b FF04H
82H
Port 1 Low Reg. (Lower half of PORT1)
00H
P1H
b FF06H
83H
Port 1 High Reg. (Upper half of PORT1)
00H
P2
b FFC0H
E0H
Port 2 Register
0000H
P3
b FFC4H
E2H
Port 3 Register
0000H
P4
b FFC8H
E4H
Port 4 Register (7 bits)
P5
b FFA2H
D1H
Port 5 Register (read only)
P5DIDIS
b FFA4H
D2H
Port 5 Digital Input Disable Register
P6
b FFCCH
E6H
Port 6 Register (8 bits)
PECC0
FEC0H
60H
PEC Channel 0 Control Register
0000H
PECC1
FEC2H
61H
PEC Channel 1 Control Register
0000H
PECC2
FEC4H
62H
PEC Channel 2 Control Register
0000H
PECC3
FEC6H
63H
PEC Channel 3 Control Register
0000H
PECC4
FEC8H
64H
PEC Channel 4 Control Register
0000H
PECC5
FECAH
65H
PEC Channel 5 Control Register
0000H
PECC6
FECCH
66H
PEC Channel 6 Control Register
0000H
PECC7
FECEH
67H
PEC Channel 7 Control Register
0000H
b FF10H
88H
CPU Program Status Word
0000H
PDCR
F0AAH
E 55H
Pin Driver Control Register
0000H
RP0H
b F108H
E 84H
System Startup Config. Reg. (Rd. only)
PSW
Data Sheet
8-Bit Description
Addr.
33
Reset
Value
00H
XXXXH
0000H
00H
XXH
1999-07
&3,
Table 5
C161PI Registers, Ordered by Name (continued)
Name
Physical
Address
RTCH
F0D6H
E 6BH
RTC High Register
no
RTCL
F0D4H
E 6AH
RTC Low Register
no
S0BG
FEB4H
5AH
Serial Channel 0 Baud Rate Generator
Reload Register
0000H
S0CON
b FFB0H
D8H
Serial Channel 0 Control Register
0000H
S0EIC
b FF70H
B8H
Serial Channel 0 Error Interrupt Control
Register
0000H
FEB2H
59H
Serial Channel 0 Receive Buffer Reg.
(read only)
S0RIC
b FF6EH
B7H
Serial Channel 0 Receive Interrupt
Control Register
0000H
S0TBIC
b F19CH
E CEH
Serial Channel 0 Transmit Buffer
Interrupt Control Register
0000H
FEB0H
58H
Serial Channel 0 Transmit Buffer Reg.
(write only)
0000H
b FF6CH
B6H
Serial Channel 0 Transmit Interrupt
Control Register
0000H
SP
FE12H
09H
CPU System Stack Pointer Register
FC00H
SSCBR
F0B4H
E 5AH
SSC Baudrate Register
0000H
SSCCON
b FFB2H
D9H
SSC Control Register
0000H
SSCEIC
b FF76H
BBH
SSC Error Interrupt Control Register
0000H
SSCRB
F0B2H
E 59H
SSCRIC
b FF74H
BAH
SSCTB
F0B0H
E 58H
SSCTIC
b FF72H
STKOV
STKUN
S0RBUF
S0TBUF
S0TIC
SYSCON
8-Bit Description
Addr.
SSC Receive Buffer
Reset
Value
XXXXH
XXXXH
SSC Receive Interrupt Control Register
0000H
SSC Transmit Buffer
0000H
B9H
SSC Transmit Interrupt Control Register
0000H
FE14H
0AH
CPU Stack Overflow Pointer Register
FA00H
FE16H
0BH
CPU Stack Underflow Pointer Register
b FF12H
89H
SYSCON2 b F1D0H
E E8H
CPU System Configuration Register 2
0000H
SYSCON3 b F1D4H
E EAH
CPU System Configuration Register 3
0000H
T14
E 69H
RTC Timer 14 Register
Data Sheet
F0D2H
CPU System Configuration Register
FC00H
1)
34
0xx0H
no
1999-07
&3,
Table 5
C161PI Registers, Ordered by Name (continued)
Name
Physical
Address
T14REL
F0D0H
E 68H
T2
FE40H
20H
GPT1 Timer 2 Register
0000H
T2CON
b FF40H
A0H
GPT1 Timer 2 Control Register
0000H
T2IC
b FF60H
B0H
GPT1 Timer 2 Interrupt Control Register
0000H
FE42H
21H
GPT1 Timer 3 Register
0000H
T3CON
b FF42H
A1H
GPT1 Timer 3 Control Register
0000H
T3IC
b FF62H
B1H
GPT1 Timer 3 Interrupt Control Register
0000H
FE44H
22H
GPT1 Timer 4 Register
0000H
T4CON
b FF44H
A2H
GPT1 Timer 4 Control Register
0000H
T4IC
b FF64H
B2H
GPT1 Timer 4 Interrupt Control Register
0000H
FE46H
23H
GPT2 Timer 5 Register
0000H
T5CON
b FF46H
A3H
GPT2 Timer 5 Control Register
0000H
T5IC
b FF66H
B3H
GPT2 Timer 5 Interrupt Control Register
0000H
FE48H
24H
GPT2 Timer 6 Register
0000H
T6CON
b FF48H
A4H
GPT2 Timer 6 Control Register
0000H
T6IC
b FF68H
B4H
GPT2 Timer 6 Interrupt Control Register
0000H
TFR
b FFACH
D6H
Trap Flag Register
0000H
FEAEH
57H
Watchdog Timer Register (read only)
T3
T4
T5
T6
WDT
WDTCON
8-Bit Description
Addr.
Reset
Value
RTC Timer 14 Reload Register
Watchdog Timer Control Register
no
0000H
2)
FFAEH
D7H
00xxH
XP0IC
b F186H
E C3H
I²C Data Interrupt Control Register
0000H
XP1IC
b F18EH
E C7H
I²C Protocol Interrupt Control Register
0000H
XP2IC
b F196H
E CBH
X-Peripheral 2 Interrupt Control Register
0000H
XP3IC
b F19EH
E CFH
RTC Interrupt Control Register
0000H
ZEROS
b FF1CH
8EH
Constant Value 0’s Register (read only)
0000H
1) The system configuration is selected during reset.
2) The reset value depends on the indicated reset source.
Data Sheet
35
1999-07
&3,
Absolute Maximum Ratings
Table 6
Absolute Maximum Rating Parameters
Parameter
Symbol
Limit Values
min.
Unit Notes
max.
7ST
9DD
-65
150
°C
-0.5
6.5
V
9IN
-0.5
9DD+0.5
V
Input current on any pin
during overload condition
-10
10
mA
Absolute sum of all input
currents during overload
condition
-
|100|
mA
1.5
W
Storage temperature
Voltage on 9DD pins with
respect to ground (9SS)
Voltage on any pin with
respect to ground (9SS)
Power dissipation
3DISS
Note: Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in
the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
During absolute maximum rating overload conditions (9IN>9DD or 9IN
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