S-93A46A Datasheet, PDF (3/34 Pages) Seiko Instruments Inc – CMOS SERIAL E2PROM

Rev.2.1_00
„ Block Diagram
CMOS SERIAL E²PROM
S-93A46A/56A/66A
Memory array
Address
decoder
VCC
GND
Data register
Output buffer
DO
DI
Mode decode logic
CS
Clock pulse
monitoring circuit
Voltage detector
SK
Clock generator
Figure 2
„ Instruction Sets
1. S-93A46A
Table 2
Instruction
Start Bit
Operation Code
Address
Data
SK input clock
1
2
3 456789
10 to 25
READ (Read data)
1
1
0 A5 A4 A3 A2 A1 A0 D15 to D0 output^*1
WRITE (Write data)
1
0
1 A5 A4 A3 A2 A1 A0 D15 to D0 input
ERASE (Erase data)
1
1
1 A5 A4 A3 A2 A1 A0

WRAL (Write all)
1
0
0 01xxxx
D15 to D0 input
ERAL (Erase all)
1
0
0 10xxxx

EWEN (Write enable)
1
0
0 11xxxx

EWDS (Write disable)
1
0
0 00xxxx

*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
Seiko Instruments Inc.
3