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T89C5115 Datasheet(PDF) 60 Page - ATMEL Corporation

No. de Pieza. T89C5115
Descripción  Low Pin Countl 8-bit Microcontroller with A/D Converter and 16 KBytes Flash Memory
Descarga  113 Pages
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Fabricante  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
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T89C5115 Datasheet(HTML) 60 Page - ATMEL Corporation

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AT89C5115
4128F–8051–05/06
Table 38. TMOD Register
TMOD (S:89h)
Timer/Counter Mode Control Register
Reset Value = 0000 0000b
Notes:
1. Reloaded from TH1 at overflow.
2. Reloaded from TH0 at overflow.
Table 39. TH0 Register
TH0 (S:8Ch)
Timer 0 High Byte Register
Reset Value = 0000 0000b
76
54
32
1
0
GATE1
C/T1#
M11
M01
GATE0
C/T0#
M10
M00
Bit
Number
Bit
Mnemonic
Description
7GATE1
Timer 1 Gating Control bit
Clear to enable Timer 1 whenever TR1 bit is set.
Set to enable Timer 1 only while INT1# pin is high and TR1 bit is set.
6C/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.
5M11
Timer 1 Mode Select bits
M11 M01 Operating mode
0
0
Mode 0: 8-bit Timer/Counter (TH1) with 5bit prescaler (TL1).
0
1
Mode 1: 16-bit Timer/Counter.
1
1
Mode 3: Timer 1 halted. Retains count.
1
0
Mode 2: 8-bit auto-reload Timer/Counter (TL1).
(1)
4M01
3GATE0
Timer 0 Gating Control bit
Clear to enable Timer 0 whenever TR0 bit is set.
Set to enable Timer/Counter 0 only while INT0# pin is high and TR0 bit is set.
2C/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.
1M10
Timer 0 Mode Select bit
M10 M00 Operating mode
0
0
Mode 0: 8-bit Timer/Counter (TH0) with 5bit prescaler (TL0).
0
1
Mode 1: 16-bit Timer/Counter.
1
0
Mode 2: 8-bit auto-reload Timer/Counter (TL0).(2)
1
1
Mode 3: TL0 is an 8-bit Timer/Counter.
TH0 is an 8-bit Timer using Timer 1’s TR0 and TF0 bits.
0
M00
76
54
32
1
0
Bit
Number
Bit
Mnemonic
Description
7:0
High Byte of Timer 0


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