Rainbow Electronics DS28DG02 User Manual
Page 26
DS28DG02: 2kb SPI EEPROM with PIO, RTC, Reset, Battery Monitor, and Watchdog
26 of 33
Figure 18. Single-Byte Write to Memory and PIO Timing
CSZ
SCK
SI
SO
High Impedance
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Single-Byte Write Timing, Mode (0,0)
0 0 0 0 A8 0 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Instruction
8-bit Address
Data Byte
t
PROG
CSZ
SCK
SI
SO
High Impedance
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Single-Byte Write Timing, Mode (1,1)
0 0 0 0 A8 0 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Instruction
8-bit Address
Data Byte
t
PROG
Figure 19. Multiple-Byte Write to Memory and PIO Timing
CSZ
SCK
SI
Multiple-Byte Write Timing, Mode (0,0)
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
0 0 0 0 A8 0 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Instruction
8-bit Address
Data Byte 1
CSZ
SCK
SI
t
PROG
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Data Byte n-2
Data Byte n-1
Data Byte n