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參數(shù)資料
| 型號(hào)： | UPD17242UC-XXX-5A4 |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 4.5 MHz, MICROCONTROLLER, PDSO30 |
| 封裝： | 0.300 INCH, PLASTIC, SSOP-30 |
| 文件頁(yè)數(shù)： | 49/102頁(yè) |
| 文件大?。?/td> | 953K |
| 代理商： | UPD17242UC-XXX-5A4 |
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50
Data Sheet U15002EJ1V1DS
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
5.2
Function of 8-Bit Timer (with Modulo Function)
Notes 1. When the STOP mode is released, bit 3 must be set.
2. Bit 2 is a write-only bit.
Caution If the system clock is changed while the timer is counting, an error occurs in the timer as follows
(when system clock fX = 4 MHz):
High-speed mode 16/fX
→ Normal mode 32/fX ... (Error due to resolution of set timer) +1.5
s
Normal mode 32/fX
→ High-speed mode 16/fX ... (Error due to resolution of set timer) –1.5
s
32
10
TMEN
TMRES
TMCK1
TMCK0
Address
RF: 33H
TMRES
After reset
8HNote 1
R/W
R/WNote 2
0
1
8-bit timer reset flag
Data read out is always "0"
Resets 8-bit counter and IRQTM
TMEN
0
1
8-bit timer count enable flag
Stops 8-bit timer count operation
Enables 8-bit timer count operation (falling edge)
TMCK1
TMCK0
00
01
10
11
8-bit timer clock source selection
Count clock: fX/32
(measurable time range: 8 s to 2.048 ms,
resolution: 8 s (error: +8 s))
Count clock: fX/64
(measurable time range: 16 s to 4.096 ms,
resolution: 16 s (error: +16 s))
Count clock: fX/256
(measurable time range: 64 s to 16.384 ms,
resolution: 64 s (error: +64 s))
Remote controller carrier generator output
Values in parentheses apply to operation when system clock fX = 4 MHz.
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