DOCUMENT NUMBER: REV:
00
DATE PRINTED:
SHEET:
STANDARD NAME:
STB
SCK
SI/SO
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
B0B1B2B3B4B5
B6
B7
'0'
RS
R/W
'1''1''1''1''1'
Start byte
Instruction / Data
Figure 11.
Typical Synchronous Serial Interface Write Cycle
STB
SCK
SI/SO
12345678 12345678
B0
B1
B2B3B4B5
B6
'0'
RSR/W
'1''1''1'
'1'
'1'
Start byte
Instruction / Data
t
WAIT
B7
Figure 12.
Typical Synchronous Serial Interface Read Cycle
5.3 RESET MODES
The module is reset automatically at power-up by an internal R-C circuit. However, an
external reset mode can also be selected when using one of the parallel interface modes (this
option is not available when using the synchronous serial interface mode). This mode allows the
module to be reset by setting the Reset (RST/) input low.
14 of 24
M0420SD-204SDAR1-3
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