89C5121-SK1 Atmel, 89C5121-SK1 Datasheet - Page 78

• Manufacturer Part Number: 89C5121-SK1
• Description: KIT SMART CARD FOR AT89C5121
• Manufacturer: Atmel
• Type: Smart Cardr

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

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