參數(shù)資料
型號: UPD17225GT
廠商: NEC Corp.
元件分類: 4位微控制器
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述: 4位單片機的小型通用紅外遙控器
文件頁數(shù): 34/84頁
文件大?。?/td> 393K
代理商: UPD17225GT
μ
PD17225, 17226, 17227, 17228
34
Data Sheet U12643EJ2V0DS00
When bit 7 of NRZLTMM is 0 (carrier output)
NRZ
REM
MAX. 500 ns (delay)
Note
(f
X
= 4 MHz)
REM pin does not go low
until carrier goes low
even if NRZ becomes 0
Note
Value when (TMCK1, TMCK0)
(1, 1).
When (TMCK1, TMCK0) = (1, 1), the value differs depending on how NRZ is manipulated. If NRZ is set
by an instruction, the width of the first high-level pulse may be shortened. If NRZ is set by data transferred
from NRZBF, the high-level pulse is delayed by the low-level pulse of the carrier clock.
When bit 7 of NRZLTMM is 0 (carrier not output)
3
2
1
0
0
0
0
NRZ
Address
RF : 12H
NRZ
On reset
0H
R/W
R/W
0
1
NRZ Data
Outputs low level to REM pin
Outputs a carrier to REM pin or high level output
3
2
1
0
0
0
0
NRZBF
Address
RF : 11H
NRZBF
On reset
0H
R/W
R/W
0
1
NRZ Data Output Next
NRZ buffer bit. Transfered to NRZ by interrupt
signal for 8-bit timer.
NRZ
REM
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