M30222 Datasheet, PDF (142/237 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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Specifications in this manual are tentative and subject to change
MITSUBISHI MICROCOMPUTERS
M30222 Group
Rev. G
Serial I/O (3, 4)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
S I/O 3, 4
S I/O 3 and S I/O 4 are exclusive clock-synchronous serial I/Os.
Figure 1.113 shows the S I/Oi block diagram and Figure 1.114 shows the S I/Oi control register. Table
1.44 shows the specifications of S I/Oi.
P90/CLK3
(P95/CLK4)
SMi1
SMi0
f1
f8
f32
SMi3
Data bus
Synchronous
circuit
SMi6
1/2
1/(ni+1)
Transfer rate register
S I/O counter i (3)
S I/O i
interrupt request
P92/SOUT3
(P96/SOUT4)
P91/SIN3
(P97/SIN4)
SMi2
SMi3
SMi5 LSB
MSB
S I/Oi transmission/reception register (8)
8
Note: i = 3, 4.
ni = A value set in the S I/O transfer rate register i (036316, 036716).
Fig. 1.113. S I/Oi block diagram (i = 3,4)
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