參數(shù)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(jī)微控制器(8位單片微控制器)
文件頁數(shù): 45/126頁
文件大小: 590K
代理商: ΜPD789415
45
μ
PD789415, 789416, 789417
(3) 8-bit timer mode control register 2 (TMC2)
TMC2 determines whether to enable or disable 8-bit timer register 2 (TM2) and specifies the count clock for
TM2. It also controls the operation of the output control circuit of 8-bit timer counter 2.
TMC2 is set using a 1-bit or 8-bit memory manipulation instruction.
A RESET input clears TMC2 to 00H.
Figure 5-18. 8-Bit Timer Mode Control Register 2 Format
TCE2
0
0
0
0
TCL21 TCL20 TOE2
TMC2
Symbol
Address
When reset
R/W
FF5BH
00H
R/W
6
7
0
5
4
3
2
1
TOE2
0
1
8-bit timer counter 2 output control
Output disabled (port mode)
Output enabled
TCL21
0
0
1
1
8-bit timer register 2 count clock selection
TCL20
0
1
0
1
f
X
/2
3
f
X
/2
7
f
XT
(32.768 kHz)
Not to be specified
TCE2
0
1
8-bit timer register 2 operation control
Operation disabled (TM2 is cleared to 0.)
Operation enabled
(625 kHz)
(39.1 kHz)
Caution
Always stop the timer before setting TMC2.
Remarks 1.
f
X
: Main system clock oscillation frequency
2.
f
XT
: Subsystem clock oscillation frequency
3.
The parenthesized values apply to operation at f
X
= 5.0 MHz or f
XT
= 32.768 kHz.
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