S-93C66BD0I-T8T1G Seiko Instruments, S-93C66BD0I-T8T1G Datasheet - Page 16

• Manufacturer Part Number: S-93C66BD0I-T8T1G
• Description: IC EEPROM 4KBIT 500KHZ 8TSSOP
• Manufacturer: Seiko Instruments

Specifications of S-93C66BD0I-T8T1G

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 4K (256 x 16)
• Speed: 500kHz
• Interface: 3-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16
3-WIRE SERIAL E
S-93C46B/56B/66B
4. 4 Writing to chip (WRAL)
CS
SK
DO
DI
To write the same 16-bit data to the entire memory address space, change CS to high, and then input the
WRAL instruction, an address, and 16-bit data following the start bit. Any address can be input. The
write operation starts when CS goes low. There is no need to set the data to 1 before writing. If the clocks
more than the specified number have been input, the clock pulse monitoring circuit cancels the WRAL
instruction. For details of the clock pulse monitoring circuit, refer to “
Write due to Erroneous Instruction Recognition ”.
DO
CS
SK
DI
1
2
1
PROM
2
0
2
0
0
3
0
3
0
High-Z
Figure 16 Chip Write Timing (S-93C56B, S-93C66B)
0
4
High-Z
4
1
5
Figure 15 Chip Write Timing (S-93C46B)
1
5
Seiko Instruments Inc.
6
6
7
7
6Xs
8
4Xs
8
9
9
10
D15
10
11
D15
12
25
D0
t
SV
t
CDS
27
D0
Function to Protect Against
t
PR
t
SV
t
CDS
Verify
busy
t
PR
ready
Verify
busy
Rev.7.0
Standby
High-Z
ready
t
HZ1
_00
Standby
High-Z
t
HZ1