T89C5121-ICUIL Atmel, T89C5121-ICUIL Datasheet - Page 51

• Manufacturer Part Number: T89C5121-ICUIL
• Description: IC 8051 MCU W/SMART CARD 24SSOP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of T89C5121-ICUIL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SmartCard, UART/USART
• Peripherals: LED, POR, WDT
• Number Of I /o: 14
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: Flash RAM
• Eeprom Size: 16K x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 5.4 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 24-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: Q1468934; T89C5121-ICSIL; T89C5121-ICSIL

4164G–SCR–07/06
Table 34. 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
A/T8xC5121
IE0
1
IT0
0
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