参数资料
型号: AT89EB5114-TGSIL
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: Low-pin-count 8-bit microcontroller with A/D converter
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDSO20
封装: SO-20
文件页数: 30/95页
文件大小: 1126K
代理商: AT89EB5114-TGSIL
30
4311A–8051–01/05
Table 15.
TMOD Register
TMOD (S:89h)
Timer/Counter Mode Control Register.
Reset Value = 0000 0000b
Table 16.
TH0 Register
TH0 (S:8Ch)
Timer 0 High Byte Register.
Reset Value = 0000 0000b
7
6
5
4
3
2
1
0
GATE1
C/T1#
M11
M01
GATE0
C/T0#
M10
M00
Bit
Number
Bit
Mnemonic
Description
7
GATE1
Timer 1 Gating Control bit
Clear to enable Timer counter 1 whenever TR1 bit is set.
Set to enable Timer counter 1 only while INT1# pin is high and TR1 bit is set.
6
C/T1#
Timer 1 Counter/Timer Select bit
Clear for Timer operation: Timer 1 counts the divided-down system clock.
Set for Counter operation: Timer 1 counts negative transitions on external pin T1.
5
M11
Timer 1 Mode Select bits
M11 M01 Operating mode
0
0
Mode 0:
0
1
Mode 1:
1
0
Mode 2:
8-bit Timer/Counter (TH1) with 5-bit prescaler (TL1).
16-bit Timer/Counter.
8-bit auto-reload Timer/Counter (TL1). Reloaded from
TH1 at overflow.
Mode 3:Timer 1 halted. Retains count.
1
1
4
M01
3
GATE0
Timer 0 Gating Control bit
Clear to enable Timer counter 0 whenever TR0 bit is set.
Set to enable Timer counter 0 only while INT0# pin is high and TR0 bit is set.
2
C/T0#
Timer 0 Counter/Timer Select bit
Clear for Timer operation: Timer 0 counts the divided-down system clock.
Set for Counter operation: Timer 0 counts negative transitions on external pin T0.
1
M10
Timer 0 Mode Select bit
M10 M00
0
0
0
1
1
0
Operating mode
Mode 0:8-bit Timer/Counter (TH0) with 5-bit prescaler (TL0).
Mode 1:16-bit Timer/Counter.
Mode 2:8-bit auto-reload Timer/Counter (TL0).
Reloaded from TH0 at overflow
Mode 3:TL0 is an 8-bit Timer/Counter
TH0 is an 8-bit Timer using Timer 1’s TR0 and TF0 bits.
1
1
0
M00
7
6
5
4
3
2
1
0
Bit
Number
Bit
Mnemonic
Description
7:0
High Byte of Timer 0.
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