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HD404318 Datasheet, PDF (44/66 Pages) Hitachi Semiconductor – 4-bit HMCS400-series microcomputer | |||
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HD404318 Series
STS wait state
(Octal counter = 000,
transmit clock disabled)
MCU reset
SMR write
STS instruction
SMR write (IFSâ1)
Transmit clock wait state
(Octal counter = 000)
Transmit clock
8 transmit clocks or STS instruction (IFS â 1)
External clock mode
Transfer state
(Octal counter = 000)
SMR write
STS wait state
(Octal counter = 000,
transmit clock disabled)
MCU reset
Continuous clock output state
(PMRA 0, 1 = 0, 0)
SMR write
STS instruction
Transmit clock
Transmit clock wait state
(Octal counter = 000)
Transmit clock
STS instruction (IFS â 1)
8 transmit clocks or
SMR write (IFS â1)
Transfer state
(Octal counter = 000)
Internal clock mode
Figure 34 Serial Interface State Transitions
Transmit clock
Serial output
data
Serial input
data latch
timing
1
2
3
4
5
6
7
8
LSB
MSB
Figure 35 Serial Interface Timing
44
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