89C5121-SK1 Atmel, 89C5121-SK1 Datasheet - Page 78
89C5121-SK1
Manufacturer Part Number
89C5121-SK1
Description
KIT SMART CARD FOR AT89C5121
Manufacturer
Atmel
Type
Smart Cardr
Datasheet
1.89C5121-SK1.pdf
(115 pages)
Specifications of 89C5121-SK1
Contents
Board
For Use With/related Products
AT89C5121
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
T89C5121-SK1
T89C5121-SK1
T89C5121-SK1
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Registers
78
A/T8xC5121
Table 55. TCON Register
TCON (S:88h) - Timer 0/Counter Control Register
Reset Value = 0000 0000b
Number
TF1
Bit
7
7
6
5
4
3
2
1
0
Mnemonic Description
TR1
TR1
TR0
Bit
TF1
TF0
IE1
IT1
IE0
IT0
6
Timer 1 Overflow flag
Cleared by the hardware when processor vectors to interrupt routine.
Set by the hardware on Timer 0/Counter overflow when Timer 1 register
overflows.
Timer 1 Run Control bit
Clear to turn off Timer 0/Counter 1.
Set to turn on Timer 0/Counter 1.
Timer 0 Overflow flag
Cleared by the hardware when processor vectors to interrupt routine.
Set by the hardware on Timer 0/Counter overflow when Timer 0 register
overflows.
Timer 0 Run Control bit
Clear to turn off Timer 0/Counter 0.
Set to turn on Timer 0/Counter 0.
Interrupt 1 Edge flag
Cleared by the hardware when interrupt is processed if edge-triggered (see IT1).
Set by the hardware when external interrupt is detected on the INT1 pin.
Interrupt 1 Type Control bit
Clear to select low level active (level triggered) for external interrupt 1 (INT1).
Set to select falling edge active (edge triggered) for external interrupt 1.
Interrupt 0 Edge flag
Cleared by the hardware when interrupt is processed if edge-triggered (see IT0).
Set by the hardware when external interrupt is detected on INT0 pin.
Interrupt 0 Type Control bit
Clear to select low level active (level triggered) for external interrupt 0 (INT0).
Set to select falling edge active (edge triggered) for external interrupt 0.
TF0
5
TR0
4
IE1
3
IT1
2
IE0
1
4164G–SCR–07/06
IT0
0
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