参数资料
型号: mPD789322
厂商: NEC Corp.
元件分类: 8位微控制器
英文描述: 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述: 8位微控制器与2/4/8K字节在系统可编程闪存
文件页数: 33/96页
文件大小: 482K
代理商: MPD789322
Preliminary Product Information U14673EJ1V0PM00
39
PD789322,789324,789326,789327
(2) 8-bit timer mode control register 40 (TMC40)
This register is used to control the timer 40 count clock and operation mode settings.
TMC40 is set using a 1-bit or 8-bit memory manipulation instruction.
RESET input sets this register to 00H.
Figure 5-15. Format of 8-Bit Timer Mode Control Register 40
Symbol
<7>
6
5
4
3
2
1
<0>
Address
After reset
R/W
TMC40
TCE40
0
TCL402
TCL401
TCL400
TMD401
TMD400
TOE40
FF69H
00H
R/W
TCE40
TM40 count control operation
Note 1
0
TM40 count value cleared and operation stopped (in cascade connection mode, the count value of TM30 is
cleared at the same time)
1
Count operation starts (in cascade connection mode, the count operation of TM30 starts at the same time)
TCL402
TCL401
TCL400
Timer 40 count clock selection
00
0
fX (5 MHz)
00
1
fX/2
2
(1.25 MHz)
01
0
fX/2 (2.5 MHz)
01
1
fX/2
2
(1.25 MHz)
10
0
fX/2
3
(625 kHz)
10
1
fX/2
4
(313 kHz)
Other than above
Setting prohibited
TMD300
TMD401
TMD400
Timer 30, timer 40 operation mode selection
Note 2
0
Discrete mode
1
0
1
Cascade connection mode
0
1
Carrier generator mode
0
1
0
PWM output mode
Other than above
Setting prohibited
TOE40
Timer output control
0
Output disabled (port mode)
1
Output enabled
Notes 1. The TCE30 setting will be ignored in cascade mode because in this case the count operation is
controlled by TCE40 (bit 7 of TMC40).
2. The operation mode selection is made using a combination of TMC30 and TMC40 register settings.
Remarks 1. fX: Main system clock oscillation frequency
2. The parenthesized values apply to operation at fX = 5.0 MHz
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