HD6433935 Hitachi, HD6433935 Datasheet - Page 258
HD6433935
Manufacturer Part Number
HD6433935
Description
8-Bit MICROCONTROLLER
Manufacturer
Hitachi
Datasheet
1.HD6433935.pdf
(521 pages)
- Current page: 258 of 521
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Bit 3: Clock source select 3 (CKS3)
Bit 3 selects the clock source to be supplied and sets the SCK
Bit 3
CKS3
0
1
Note:
Bits 2 to 0: Clock select 2 to 0 (CKS2 to CKS0)
When CKS3 is cleared to 0, bits 2 to 0 selects the prescaler division ratio and the serial clock
cycle.
Bit 2
CKS2
0
0
0
0
1
1
1
1
2. Serial control status register 1 (SCSR1)
SCSR1 is an 8-bit register that indicates the operational and error status of SCI1.
Upon reset, SCSR1 is initialized to H'9C.
246
Bit
Initial value
Read/Write
Note: * Only a write of 0 for flag clearing is possible.
*
Bit 1
CKS1
0
0
1
1
0
0
1
1
SCI1 is an internal function that performs interfacing to the on-chip FLEX™ decoder. It
cannot be used with SCK1 input selected.
Description
Clock source is prescaler S, SCK
Clock source is external clock, SCK
—
—
7
1
Bit 0
CKS0
0
1
0
1
0
1
0
1
SOL
R/W
6
0
Prescaler Division Ratio
ø/1024 (initial value)
ø/256
ø/64
ø/32
ø/16
ø/8
ø/4
ø
W
/4
R/(W)*
ORER
5
0
1
is output
1
—
—
4
1
is input*
—
—
3
1
1
to input or output mode.
Serial Clock Cycle
ø = 2.5 MHz
409.6 µs
102.4 µs
25.6 µs
12.8 µs
6.4 µs
3.2 µs
1.6 µs
50 µs or 104.2 µs
—
—
2
1
MTRF
R
1
0
(initial value)
R/W
STF
0
0
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