4524 Datasheet, PDF (55/161 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4524 Group
Master
SOUT
SI N
SST instruction
M7’
S7’
M0
M1
M2
M3
M4
M5
M6
M7
S0
S1
S2
S3
S4
S5
S6 S7
SCK
Slave
SST instruction
SRDY signal
SOUT
SI N
S7’
M7’
S0
S1
S2
S3
S4
S5
S6
S7
M0
M1
M2
M3
M4
M5
M6 M7
M0–M7: Contents of master serial I/O register
S0–S7: Contents of slave serial I/O register
Rising of SCK: Serial input
Falling of SCK: Serial output
Fig. 41 Timing of serial I/O data transfer
Rev.2.00 Jul 27, 2004 page 55 of 159
REJ03B0091-0200Z