NM93CS06
(MICROWIRE™ Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
General Description
Features
NM93CS06 is a 256-bit CMOS non-volatile EEPROM organized
as 16 x 16-bit array. This device features MICROWIRE interface
which is a 4-wire serial bus with chipselect (CS), clock (SK), data
input (DI) and data output (DO) signals. This interface is compatible to many of standard Microcontrollers and Microprocessors.
NM93CS06 offers programmable write protection to the memory
array using a special register called Protect Register. Selected
memory locations can be protected against write by programming
this Protect Register with the address of the first memory location
to be protected (all locations greater than or equal to this first
address are then protected from further change). Additionally, this
address can be “permanently locked” into the device, making all
future attempts to change data impossible. In addition this device
features “sequential read”, by which, entire memory can be read
in one cycle instead of multiple single byte read cycles. There are
10 instructions implemented on the NM93CS06, 5 of which are for
memory operations and the remaining 5 are for Protect Register
operations. This device is fabricated using Fairchild Semiconductor floating-gate CMOS process for high reliability, high endurance
and low power consumption.
■ Wide VCC 2.7V - 5.5V
■ Programmable write protection
■ Sequential register read
■ Typical active current of 200µA
10µA standby current typical
1µA standby current typical (L)
0.1µA standby current typical (LZ)
■ No Erase instruction required before Write instruction
■ Self timed write cycle
■ Device status during programming cycles
■ 40 year data retention
■ Endurance: 1,000,000 data changes
■ Packages available: 8-pin SO, 8-pin DIP, 8-pin TSSOP
“LZ” and “L” versions of NM93CS06 offer very low standby current
making them suitable for low power applications. This device is offered
in both SO and TSSOP packages for small space considerations.
Functional Diagram
VCC
CS
INSTRUCTION
DECODER
CONTROL LOGIC
AND CLOCK
GENERATORS
SK
DI
INSTRUCTION
REGISTER
ADDRESS
REGISTER
DECODER
COMPARATOR
AND
WRITE ENABLE
PROTECT
REGISTER
PRE
PE
HIGH VOLTAGE
GENERATOR
AND
PROGRAM
TIMER
EEPROM ARRAY
16
READ/WRITE AMPS
VSS
16
DATA IN/OUT REGISTER
16 BITS
DO
© 1999 Fairchild Semiconductor Corporation
NM93CS06 Rev. F.2
DATA OUT BUFFER
1
www.fairchildsemi.com
NM93CS06 (MICROWIRE Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
February 2000
NM93CS06 (MICROWIRE Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
Connection Diagram
Dual-In-Line Package (N)
8–Pin SO (M8) and 8–Pin TSSOP (MT8)
CS
1
8
VCC
SK
2
7
PRE
DI
3
6
PE
DO
4
5
GND
Top View
Package Number
N08E, M08A and MTC08
Pin Names
CS
Chip Select
SK
Serial Data Clock
DI
Serial Data Input
DO
Serial Data Output
GND
Ground
PE
Program Enable
PRE
Protect Register Enable
VCC
Power Supply
Ordering Information
NM
93
CS
XX
LZ
E
XXX
Letter
Description
N
M8
MT8
8-pin DIP
8-pin SO
8-pin TSSOP
Temp. Range
None
V
E
0 to 70°C
-40 to +125°C
-40 to +85°C
Voltage Operating Range
Blank
L
LZ
4.5V to 5.5V
2.7V to 5.5V
2.7V to 5.5V and
x-x-A3-A2-A1-A0; (x -> Don't Care, can be 0 or 1); (A3-A0 -> User defined)
SEQUENTIAL READ CYCLE (PRE = 0; PE = X)
;;;;
;;;;
PRE
tCS
CS
SK
DI
1
Star t
Bit
DO
1
0
A5
Opcode
Bits(2)
High - Z
A0
Address
Bits(6)
;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;;
0
Dummy
Bit
D15
D0
Data(n)
D15
D0
Data(n+1)
D15
D0
Data(n+2)
93CS06:
Address bits patter n -> x-x-A3-A2-A1-A0; (x -> Don't Care, can be 0 or 1); (A3-A0 -> User defined)
9
NM93CS06 Rev. F.2
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NM93CS06 (MICROWIRE Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
Timing Diagrams (Continued)
WRITE ENABLE CYCLE (WEN)
PRE
PE
tCS
CS
SK
DI
1
0
Star t
Bit
0
A5
A4
Opcode
Bits(2)
A1
A0
Address
Bits(6)
High - Z
DO
93CS06:
A d d r e s s b i t s p a t t e r n - > 1 - 1 - x - x - x - x ; ( x - > D o n ' t C a r e, c a n b e 0 o r 1 )
WRITE DISABLE CYCLE (WDS)
PRE
PE
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
tCS
CS
SK
DI
1
0
Star t
Bit
0
A5
A4
Opcode
Bits(2)
A1
A0
Address
Bits(6)
High - Z
DO
93CS06:
Address bits patter n -> 0-0-x-x-x-x; (x -> Don't Care, can be 0 or 1)
WRITE CYCLE (WRITE)
PRE
PE
tCS
CS
SK
DI
1
Star t
Bit
0
1
Opcode
Bits(2)
A5
A4
A1
A0
D15 D14
Address
Bits(6)
Data
Bits(16)
D1
D0
tWP
High - Z
DO
Ready
Busy
93CS06:
A d d r e s s b i t s p a t t e r n - > x - x - A 3 - A 2 - A 1 - A 0 ; ( x - > D o n ' t C a r e, c a n b e 0 o r 1 ) ; ( A 3 - A 0 - > U s e r d e f i n e d )
Data bits pattern
-> User defined
10
NM93CS06 Rev. F.2
www.fairchildsemi.com
WRITE ALL CYCLE (WRALL)
PRE
PE
tCS
CS
SK
1
DI
Star t
Bit
0
0
A5
A4
Opcode
Bits(2)
A1
A0
D15 D14
Address
Bits(6)
D1
D0
tWP
Data
Bits(16)
High - Z
DO
Ready
Busy
93CS06:
Address bits patter n -> 0-1-x-x-x-x; (x -> Don't Care, can be 0 or 1)
Data bits patter n
-> User defined
PROTECT REGISTER READ CYCLE (PRREAD)
;;;;
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
PRE
PE
tCS
CS
SK
DI
1
Star t
Bit
1
0
A5
Opcode
Bits(2)
A4
A1
Address
Bits(6)
High - Z
DO
A0
;;;;;;;;;;;;;;
;;;;;;;;;;;;;;
;;;
;;;
0
D5
D1
D0
Dummy
Bit
93CS06:
Address bits patter n -> x-x-x-x-x-x; (x -> Don't Care, can be 0 or 1)
Of the 6-bit output data(D5-D0), only D3 to D0 are valid and they correspond to A3 to A0 respectively.
PROTECT REGISTER ENABLE CYCLE (PREN)
;;;;;;;;;
;;;;;;;;;
;;;;;;;;;
PRE
PE
tCS
CS
SK
DI
1
Star t
Bit
0
0
Opcode
Bits(2)
A5
A4
A1
A0
Address
Bits(6)
High - Z
DO
93CS06:
Address bits patter n -> 1-1-x-x-x-x; (x -> Don't Care, can be 0 or 1)
11
NM93CS06 Rev. F.2
www.fairchildsemi.com
NM93CS06 (MICROWIRE Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
Timing Diagrams (Continued)
NM93CS06 (MICROWIRE Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
Timing Diagrams (Continued)
PROTECT REGISTER CLEAR CYCLE (PRCLEAR)
;;;;;;;;;
;;;;;;;;;
;;;;;;;;;
PRE
PE
tCS
CS
SK
1
DI
1
Star t
Bit
1
Opcode
Bits(2)
DO
A5
A4
A1
A0
tWP
Address
Bits(6)
High - Z
Ready
Busy
93CS06:
Address bits patter n -> 1-1-1-1-1-1
PROTECT REGISTER WRITE CYCLE (PRWRITE)
;;;;;;;;;
;;;;;;;;;
;;;;;;;;;
PRE
PE
tCS
CS
SK
DI
1
0
Star t
Bit
1
Opcode
Bits(2)
DO
A5
A4
High - Z
A1
A0
tWP
Address
Bits(6)
Ready
Busy
93CS06:
Address bits patter n -> x-x-A3-A2-A1-A0; (x -> Don't Care, can be 0 or 1); (A3-A0 -> User defined)
PROTECT REGISTER DISABLE CYCLE (PRDS)
;;;;;;;;;
;;;;;;;;;
;;;;;;;;;
PRE
PE
tCS
CS
SK
DI
1
Star t
Bit
DO
0
0
Opcode
Bits(2)
A5
High - Z
A4
A1
Address
Bits(6)
A0
tWP
Ready
Busy
93CS06:
Address bits patter n -> 0-0-0-0-0-0
12
NM93CS06 Rev. F.2
www.fairchildsemi.com
NM93CS06 (MICROWIRE Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
Timing Diagrams (Continued)
CLEARING READY STATUS
PRE
PE
;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;
CS
SK
DI
Star t
Bit
DO
High - Z
Ready
High - Z
Busy
Note: This Star t bit can also be par t of a next instr uction. Hence the cycle
can be continued(instead of getting ter minated, as shown) as if a new
instr uction is being issued.
13
NM93CS06 Rev. F.2
www.fairchildsemi.com
NM93CS06 (MICROWIRE Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
Physical Dimensions inches (millimeters) unless otherwise noted
0.189 - 0.197
(4.800 - 5.004)
8 7 6 5
0.228 - 0.244
(5.791 - 6.198)
1 2 3 4
Lead #1
IDENT
0.010 - 0.020
x 45°
(0.254 - 0.508)
0.0075 - 0.0098
(0.190 - 0.249)
Typ. All Leads
0.150 - 0.157
(3.810 - 3.988)
8° Max, Typ.
All leads
0.04
(0.102)
All lead tips
0.053 - 0.069
(1.346 - 1.753)
0.004 - 0.010
(0.102 - 0.254)
Seating
Plane
0.014
(0.356)
0.016 - 0.050
(0.406 - 1.270)
Typ. All Leads
0.050
(1.270)
Typ
0.014 - 0.020 Typ.
(0.356 - 0.508)
Molded Package, Small Outline, 0.15 Wide, 8-Lead (M8)
Package Number M08A
14
NM93CS06 Rev. F.2
www.fairchildsemi.com
0.114 - 0.122
(2.90 - 3.10)
8
5
(4.16) Typ (7.72) Typ
0.169 - 0.177
(4.30 - 4.50)
0.246 - 0.256
(6.25 - 6.5)
(1.78) Typ
(0.42) Typ
0.123 - 0.128
(3.13 - 3.30)
(0.65) Typ
1
Land pattern recommendation
4
Pin #1 IDENT
0.0433
Max
(1.1)
0.0256 (0.65)
Typ.
0.0035 - 0.0079
See detail A
0.002 - 0.006
(0.05 - 0.15)
0.0075 - 0.0098
(0.19 - 0.30)
Gage
plane
0°-8°
DETAIL A
Typ. Scale: 40X
0.020 - 0.028
(0.50 - 0.70)
Seating
plane
0.0075 - 0.0098
(0.19 - 0.25)
Notes: Unless otherwise specified
1. Reference JEDEC registration MO153. Variation AA. Dated 7/93
8-Pin Molded TSSOP, JEDEC (MT8)
Package Number MTC08
15
NM93CS06 Rev. F.2
www.fairchildsemi.com
NM93CS06 (MICROWIRE Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
Physical Dimensions inches (millimeters) unless otherwise noted
0.373 - 0.400
(9.474 - 10.16)
0.090
(2.286)
8
0.092
DIA
(2.337)
7
6
0.250 - 0.005
+
Pin #1 IDENT
8
0.032 ± 0.005
(6.35 ± 0.127)
Pin #1
IDENT
1
Option 1
1
0.280 MIN
(7.112)
0.300 - 0.320
(7.62 - 8.128)
7
(0.813 ± 0.127)
RAD
5
2
3
0.040 Typ.
(1.016)
0.030
MAX
(0.762)
20° ± 1°
4
Option 2
0.145 - 0.200
0.039
(0.991)
(3.683 - 5.080)
0.130 ± 0.005
(3.302 ± 0.127)
95° ± 5°
0.009 - 0.015
(0.229 - 0.381)
+0.040
0.325 -0.015
+1.016
8.255 -0.381
0.125
(3.175)
DIA
NOM
0.125 - 0.140
(3.175 - 3.556)
0.065
(1.651)
90° ± 4°
Typ
0.018 ± 0.003
(0.457 ± 0.076)
0.100 ± 0.010
(2.540 ± 0.254)
0.045 ± 0.015
(1.143 ± 0.381)
0.020
(0.508)
Min
0.060
(1.524)
0.050
(1.270)
Molded Dual-In-Line Package (N)
Package Number N08E
Life Support Policy
Fairchild's products are not authorized for use as critical components in life support devices or systems without the express written
approval of the President of Fairchild Semiconductor Corporation. As used herein:
1. Life support devices or systems are devices or systems which,
(a) are intended for surgical implant into the body, or (b) support
or sustain life, and whose failure to perform, when properly
used in accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a significant
injury to the user.
Fairchild Semiconductor
Americas
Customer Response Center
Tel. 1-888-522-5372
2. A critical component is any component of a life support device
or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system,
or to affect its safety or effectiveness.
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Fax:
+44 (0) 1793-856858
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Tel:
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Tel: 81-3-3818-8840
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Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.
16
NM93CS06 Rev. F.2
www.fairchildsemi.com
NM93CS06 (MICROWIRE Bus Interface) 256-Bit Serial EEPROM
with Data Protect and Sequential Read
Physical Dimensions inches (millimeters) unless otherwise noted
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