AT83C5134 Atmel Corporation, AT83C5134 Datasheet - Page 7

• Manufacturer Part Number: AT83C5134
• Manufacturer: Atmel Corporation

Specifications of AT83C5134

• Max. Operating Frequency: 32 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 1.25
• Eeprom (bytes): 512
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 4
• Mask Rom (kbytes): 8
• Watchdog: Yes

7683C–USB–11/07
Table 4-3.
Table 4-4.
Table 4-5.
LED[3:0]
Signal
Signal
Name
Name
Signal
T2EX
Name
INT0
INT1
RxD
TxD
T0
T1
T2
Type
Type
Type
O
O
I
I
I
I
I
I
I
O
Serial I/O Signal Description
Timer 0, Timer 1 and Timer 2 Signal Description
LED Signal Description
Description
Serial Input
The serial input for Extended UART. This I/O is 5 Volt Tolerant.
Serial Output
The serial output for Extended UART. This I/O is 5 Volt Tolerant.
Description
Timer 0 Gate Input
INT0 serves as external run control for timer 0, when selected by GATE0 bit in
TCON register.
External Interrupt 0
INT0 input set IE0 in the TCON register. If bit IT0 in this register is set, bits IE0 are
set by a falling edge on INT0. If bit IT0 is cleared, bits IE0 is set by a low level on
INT0.
Timer 1 Gate Input
INT1 serves as external run control for Timer 1, when selected by GATE1 bit in
TCON register.
External Interrupt 1
INT1 input set IE1 in the TCON register. If bit IT1 in this register is set, bits IE1 are
set by a falling edge on INT1. If bit IT1 is cleared, bits IE1 is set by a low level on
INT1.
Timer Counter 0 External Clock Input
When Timer 0 operates as a counter, a falling edge on the T0 pin increments the
count.
Timer/Counter 1 External Clock Input
When Timer 1 operates as a counter, a falling edge on the T1 pin increments the
count.
Timer/Counter 2 External Clock Input
Timer/Counter 2 Clock Output
Timer/Counter 2 Reload/Capture/Direction Control Input
Description
Direct Drive LED Output
These pins can be directly connected to the Cathode of standard LEDs without
external current limiting resistors. The typical current of each output can be
programmed by software to 2, 6 or 10 mA. Several outputs can be connected
together to get higher drive capabilities.
AT83C5134/35/36
Alternate
Alternate
Alternate
Function
Function
Function
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P1.0
P1.1
P3.3
P3.5
P3.6
P3.7
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