S-93A46BD0A-J8T2U3 Datasheet, PDF (12/39 Pages) Seiko Instruments Inc – Function to protect against write due to erroneous instruction recognition

FOR AUTOMOTIVE 125°C OPERATION 3-WIRE SERIAL E²PROM
S-93A46B/56B/66B/76B/86B
Rev.1.2_00
4. S-93A76B
Table 14
Instruction
Start Bit
Operation
Code
Address
Data
SK input clock
READ (Data read)
1
2 3 4 5 6 7 8 9 10 11 12 13
14 to 29
1
1 0 x A8 A7 A6 A5 A4 A3 A2 A1 A0 D15 to D0 output^*1
WRITE (Data write)
1
0 1 x A8 A7 A6 A5 A4 A3 A2 A1 A0 D15 to D0 input
ERASE (Data erase)
1
1 1 x A8 A7 A6 A5 A4 A3 A2 A1 A0
−
WRAL (Chip write)
1
0 0 0 1 x x x x x x x x D15 to D0 input
ERAL (Chip erase)
1
0 0 10xxxxxxxx
−
EWEN (Write enable)
1
0 0 11xxxxxxxx
−
EWDS (Write disable) 1
0 0 00xxxxxxxx
−
*1. When the 16-bit data in the specified address has been output, the data in the next address is output.
Remark x = Don't care.
5. S-93A86B
Table 15
Instruction
Start Bit
Operation
Code
Address
Data
SK input clock
1
2 3 4 5 6 7 8 9 10 11 12 13
14 to 29
READ (Data read)
1
1 0 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 D15 to D0 output^*1
WRITE (Data write)
1
0 1 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 D15 to D0 input
ERASE (Data erase)
1
1 1 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
−
WRAL (Chip write)
1
0 0 0 1 x x x x x x x x D15 to D0 input
ERAL (Chip erase)
1
0 0 10x xxxxx xx
−
EWEN (Write enable)
1
0 0 11x xxxxx xx
−
EWDS (Write disable) 1
0 0 00x xxxxx xx
−
*1. When the 16-bit data in the specified address has been output, the data in the next address is output.
Remark x = Don't care.
12