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參數(shù)資料
| 型號： | UPD17207GF |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND A/D CONVERTER FOR INFRARED REMOTE CONTROL TRANSMITTERS |
| 中文描述： | 4位單片機與LCD控制器/驅(qū)動器和A / D轉(zhuǎn)換器紅外遙控遞質(zhì) |
| 文件頁數(shù)： | 57/120頁 |
| 文件大?。?/td> | 516K |
| 代理商： | UPD17207GF |
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μ
PD17201A, 17207
57
Fig. 10-3 Serial Interface Control Register
Selects Serial Clock
0
0
External clock
SO Pin Status
0
1
Serial data output
High-impedance status
Function
0
1
Inhibits contents of shift register from being shifted.
Pin status can be read by instruction input from port.
Shifts contents of shift register by serial clock pulses.
Pin status can be read by instrucrtion input from port.
Bit 3
Bit 2
Bit 1
Bit 0
SIOTS
0
0
0
0
Read/write
Default at reset
RF: Address 22H
SIOHIZ
SIOCK1
SIOCK0
R/W
SIOCK1, SIOCK0
SIOHIZ
SIOTS
[Read]
R: Read, W: Write
0
1
1
1
0
1
SIOCK1,
SIOCK0
f
sys
/16
(f
sys
: system clock. f
X
or f
XT
)
f
sys
/128
f
sys
/1024
Function
0
1
Forcibly stops transfer of serial data. Data transfer cannot be resumed
from where it has been stopped.
3-bit counter is cleared.
Can be set by PUT instruction only. Transfer of serial data starts.
Resets IRQSIO flag (to
“
0
”
).
This bit is automatically reset to
“
0
”
after transfer of data ends.
[Write]
Caution Be sure to select a serial clock signal before starting transfer of serial data. Never set them at
the same time.
Remark
At the end of transfer of 8-bit serial data, the IRQSIO flag (bit 3, address 3BH of the register file) is turned
on (“1”) and an interrupt request occurs.
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