參數資料
型號: μPD789415
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數: 44/126頁
文件大小: 590K
代理商: ΜPD789415
44
μ
PD789415, 789416, 789417
(2) 8-bit timer mode control register 1 (TMC1)
TMC1 determines whether to enable or disable 8-bit timer register 1 (TM1) and specifies the count clock for
TM1.
TMC1 is set using a 1-bit or 8-bit memory manipulation instruction.
A RESET input clears TMC1 to 00H.
Figure 5-17. 8-Bit Timer Mode Control Register 1 Format
TCE1
0
0
0
0
TCL11 TCL10
0
TMC1
Symbol
Address
When reset
R/W
FF57H
00H
R/W
6
7
5
4
3
2
1
0
TCL11
0
0
1
1
8-bit timer register 1 count clock selection
TCL10
0
1
0
1
f
X
/2
4
f
X
/2
8
Rising edge of TI1
Falling edge of TI1
TCE1
0
1
8-bit timer register 1 operation control
Operation disabled (TM1 is cleared to 0.)
Operation enabled
(312.5 kHz)
(19.5 kHz)
Caution
Always stop the timer before setting TMC1.
Remarks 1.
f
X
: Main system clock oscillation frequency
2.
The parenthesized values apply to operation at f
X
= 5.0 MHz.
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