Document Outline
- S-93A66A
- Cover
- Features
- Packages
- Pin Assignment
- Block Diagram
- Instruction Sets
- Absolute Maximum Ratings
- Recommended Operating Conditions
- Pin Capacitance
- Endurance
- DC Electrical Characteristics
- AC Electrical Characteristics
- Operation
- Start Bit
- Write Disable Function when Power Supply Voltage is Low
- Function to Protect Against Write due to Erroneous Instruction Recognition
- 3-Wire Interface (Direct Connection between DI and DO)
- I/O Pins
- Precaution
- Characteristics
- Product Code Structure
- Package drawing
Rev.1.0
_00
CMOS SERIAL E
2
PROM
S-93A66A
Seiko Instruments Inc.
1
The S-93A66A is a high speed, low current
consumption, 4 K-bit serial E
2
PROM with a wide
operating voltage range. It is organized as 256-word
16-bit. It is capable of sequential read, at which
time addresses are automatically incremented in 16-
bit blocks. The instruction code is compatible with
the NM93CS66.
Features
Low current consumption
Standby:
3.0
A Max. (V
CC
= 5.5 V)
Operating: 1.0 mA Max. (V
CC
= 5.5 V)
0.6 mA Max. (V
CC
= 2.7 V)
Wide operating voltage range Read:
2.7 to 5.5 V
Write:
2.7 to 5.5 V
Sequential read capable
Write disable function when power supply voltage is low
Function to protect against write due to erroneous instruction recognition
CMOS schmitt input (CS, SK)
Endurance:
10
6
cycles/word (at
+85C),
1.5
10
5
cycles/word (at
+125C)
Data retention: 15 years (after rewriting 1.5 10
5
cycles/word at
+125C)
High-temperature operation: +125C Max. supported
Packages
Package name
Drawing code
Package
Tape Reel
8-Pin SOP (JEDEC)
FJ008-A
FJ008-D
FJ008-D
Caution Before using the product in medical equipment or automobile equipment including car audio,
keyless entry and engine control unit, contact to SII is indispensable.
CMOS SERIAL E
2
PROM
S-93A66A
Rev.1.0
_00
Seiko Instruments Inc.
2
Pin Assignment
8-Pin SOP (JEDEC)
Top view
Table 1
Pin Number
Pin Name
Function
1 CS
Chip select input
2 SK
Serial clock input
3 DI
Serial data input
4 DO
Serial data output
5 GND
Ground
6
TEST
*1
Test
7 NC
No
connection
8 VCC
Power
supply
*1. Connect to GND or VCC.
1
2
3
4
8
7
6
5
VCC
NC
TEST
GND
CS
SK
DO
DI
Figure 1
S-93A66AD0A-J8T20B
Remark See Dimension for details of the package drawing.
CMOS SERIAL E
2
PROM
Rev.1.0
_00
S-93A66A
Seiko Instruments Inc.
3
Block Diagram
Memory array
Data register
Address
decoder
Mode decode logic
Clock pulse
monitoring circuit
Output buffer
VCC
GND
DO
DI
CS
Clock generator
Voltage detector
SK
Figure 2
Instruction Sets
Table 2
Instruction Start
Bit
Operation
Code
Address Data
SK
input
clock
1
2 3 4 5 6 7 8 9 10 11
12
to
27
READ (Read data)
1
1
0
A7 A6 A5 A4 A3 A2 A1 A0 D15 to D0
Output
*1
WRITE (Write data)
1
0
1
A7 A6 A5 A4 A3 A2 A1 A0 D15 to D0 Input
ERASE (Erase data)
1
1
1
A7 A6 A5 A4 A3 A2 A1 A0
WRAL (Write all)
1
0
0
0
1
x x x x x x D15 to D0 Input
ERAL (Erase all)
1
0
0
1
0
x x x x x x
EWEN (Write enable)
1
0
0
1
1
x x x x x x
EWDS (Write disable)
1
0
0
0
0
x x x x x x
*1. When the 16-bit data in the specified address has been output, the data in the next address is output.
Remark x: Doesn't matter
CMOS SERIAL E
2
PROM
S-93A66A
Rev.1.0
_00
Seiko Instruments Inc.
4
Absolute Maximum Ratings
Table 3
Parameter Symbol Ratings
Unit
Power supply voltage
V
CC
-0.3 to +7.0
V
Input voltage
V
IN
-0.3 to V
CC
+0.3
V
Output voltage
V
OUT
-0.3 to V
CC
V
Storage temperature
T
stg
-65 to +150
C
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
Recommended Operating Conditions
Table 4
Parameter Symbol
Conditions Min.
Typ. Max. Unit
READ/EWDS 2.7
5.5 V
Power supply voltage
V
CC
WRITE/ERASE/
WRAL/ERAL/EWEN
2.7
5.5 V
High level input voltage
V
IH
0.8
V
CC
V
CC
V
Low level input voltage
V
IL
0.0
0.2
V
CC
V
Operating temperature
T
opr
-40
+125
C
Pin Capacitance
Table 5
(Ta
= 25C, f = 1.0 MHz, V
CC
= 5.0 V)
Parameter Symbol
Conditions Min.
Typ.
Max.
Unit
Input Capacitance
C
IN
V
IN
= 0 V
8
pF
Output Capacitance
C
OUT
V
OUT
= 0 V
10 pF
Endurance
Table 6
Parameter Symbol
Operating
Temperature
Min.
Typ. Max. Unit
Endurance N
W
-40 to +125C 1.5
10
5
cycles/word
CMOS SERIAL E
2
PROM
Rev.1.0
_00
S-93A66A
Seiko Instruments Inc.
5
DC Electrical Characteristics
Table 7
V
CC
= 4.5 to 5.5 V
V
CC
= 2.7 to 4.5 V
Parameter Symbol
Conditions
Min. Typ. Max. Min. Typ. Max.
Unit
Current consumption
(READ)
I
CC1
DO no load
1.0
0.6 mA
Table 8
V
CC
= 4.5 to 5.5 V
V
CC
= 2.7 to 4.5 V
Parameter Symbol
Conditions
Min. Typ. Max. Min. Typ. Max.
Unit
Current consumption
(WRITE)
I
CC2
DO no load
2.0
1.5 mA
Table 9
V
CC
= 4.5 to 5.5 V
V
CC
= 2.7 to 4.5 V
Parameter Symbol
Conditions
Min. Typ. Max. Min. Typ. Max.
Unit
Standby current
consumption
I
SB
CS
= GND, DO = Open,
Other inputs to V
CC
or GND
3.0
3.0
A
Input leakage
current
I
LI
V
IN
= GND to V
CC
0.1 2.0
0.1 2.0
A
Output leakage
current
I
LO
V
OUT
= GND to V
CC
0.1 2.0
0.1 2.0
A
I
OL
= 2.1 mA
0.6
V
Low level output
voltage
V
OL
I
OL
= 100 A
0.2
0.2 V
I
OH
= -400 A
2.4
V
I
OH
= -100 A
V
CC
- 0.3
V
CC
- 0.3
V
High level output
voltage
V
OH
I
OH
= -10 A
V
CC
- 0.2
V
CC
- 0.2
V
Write enable latch
data hold voltage
V
DH
Only when write disable
mode
1.5
1.5
V
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