TC9WMC1FK Datasheet, PDF (7/16 Pages) Toshiba Semiconductor – CMOS Digital Integrated Circuits Silicon Monolithic

TC9WMC1FK/FU,TC9WMC2FK/FU
(3.4)
Write All (WRAL)
The Write All instruction writes all memory locations with data patterns specified in the
instruction. The data is 16 bits long. After the CS is driven High, a start bit is transferred followed
by the WRAL instruction, any addresses and 16 bits of data. After the least significant bit (D0) of
data is received on the falling edge of SK, a write operation is triggered by the CS being pulled
Low. It is not necessary to set every bit in the memory array to “1” before writing data.
CS
Verify
1 2 3 4 5 6 7 8 9 10 25
SK
DI
1 0 0 0 1 x x x x D15 D0
DO
Hi-Z
Busy
Ready
Hi-Z
t_PW
Figure 7. Write Timing Diagram (TC9WMC1)
CS
1 2 3 4 5 6 7 8 9 10 11 12 27
SK
Verify
DI
1 0 0 0 1 x x x x x x D15 D0
DO
Hi-Z
Busy
Ready
Hi-Z
t_PW
Figure 8. Write Timing Diagram (TC9WMC2)
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2007-10-19