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參數(shù)資料
| 型號： | mPD789326GB-xxx-8ET |
| 廠商： | NEC Corp. |
| 元件分類： | 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位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存 |
| 文件頁數(shù)： | 39/96頁 |
| 文件大?。?/td> | 482K |
| 代理商： | MPD789326GB-XXX-8ET |
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Preliminary Product Information U14673EJ1V0PM00
39
μ
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
0
0
0
f
X
(5 MHz)
0
0
1
f
X
/2
2
(1.25 MHz)
0
1
0
f
X
/2 (2.5 MHz)
0
1
1
f
X
/2
2
(1.25 MHz)
1
0
0
f
X
/2
3
(625 kHz)
1
0
1
f
X
/2
4
(313 kHz)
Other than above
Setting prohibited
TMD300
TMD401
TMD400
Timer 30, timer 40 operation mode selection
Note 2
0
0
0
Discrete mode
1
0
1
Cascade connection mode
0
1
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.
f
X
: Main system clock oscillation frequency
2.
The parenthesized values apply to operation at f
X
= 5.0 MHz
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