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參數(shù)資料
| 型號(hào)： | AT_8032 |
| 廠(chǎng)商： | Atmel Corp. |
| 英文描述： | 8-bit Embedded Microcontroller Core(8位嵌入式基于工業(yè)標(biāo)準(zhǔn)軟件兼容的微控制器) |
| 中文描述： | 8位嵌入式微控制器核心（8位嵌入式基于工業(yè)標(biāo)準(zhǔn)軟件兼容的微控制器） |
| 文件頁(yè)數(shù)： | 34/39頁(yè) |
| 文件大?。?/td> | 532K |
| 代理商： | AT_8032 |
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AT_8032 Core
34
TMOD: Timer/Counter Mode Control Register
Notes:
1. The timer is turned ON/OFF by setting/clearing bit TR0 by software.
2. The timer is turned ON/OFF by the 1-to-0 transition on INT0 (P3.2) when TR0 = 1 (hardware control).
Table 19.
Timer/Counter Mode Control Register
MSB
LSB
GATE
C/T
M1
M0
GATE
C/T
M1
M0
Timer 1
Timer 0
Table 20.
Timer/CounterMode Control Register Bit Functions
Symbol
Position
Function
GATE
TMOD.7/3
Enable Gate. When set, Timer/Counter x is enabled only while INTx pin is high and TRx control
bit is set. When cleared, Timer/Counter x is enabled whenever TRx control bit is set.
C/T
TMOD.6/2
Timer or Counter Selector. Cleared for Timer operation (input from internal system clock). Set for
Counter operation (input from Tx input pin).
M1
TMOD.5/1
Mode selector bit (Table 21)
M0
TMOD.4/0
Mode selector bit (Table 21)
Table 21.
Timer/Counter Operating Modes
M1
M0
Mode
Description
0
0
0
13-bit Timer (8048 compatible)
0
0
1
16-bit Timer/Counter
1
0
2
8-bit Auto-reload Timer/Counter
1
1
3
Timer 0: TL0 is an 8-bit Timer/Counter controlled by the standard Timer 0 control bits. TH0 is an
8-bit Timer and is controlled by Timer 1 control bits.
Timer 1: Timer/Counter is stopped.
Table 22.
Timer/Counter 0 as a Timer
Mode
Timer 0 Function
Internal TMOD control
(1)
External TMOD control
(2)
0
13-bit Timer
00H
08H
1
16-bit Timer
01H
09H
2
8-bit Auto-Reload
02H
0AH
3
Two 8-bit Timers
03H
0BH
Table 23.
Timer/Counter 0 as a Counter
Mode
Counter 0 Function
Internal TMOD Control
(1)
External TMOD Control
(2)
0
13-bit Timer
04H
0CH
1
16-bit Timer
05H
0DH
2
8-bit Auto-Reload
06H
0EH
3
One 8-bit Counter
07H
0FH
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