AT83C5134 Atmel Corporation, AT83C5134 Datasheet - Page 74

• 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

18. Programmable LED
74
AT83C5134/35/36
AT83C5134/35/36 have up to 4 programmable LED current sources, configured by the register
LEDCON.
Table 18-1.
LEDCON (S:F1h) LED Control Register
Reset Value = 00h
Bit Number
7:6
5:4
3:2
1:0
7
LED3
Bit
Mnemonic
LEDCON Register
LED3
LED2
LED1
LED0
6
Description
Port LED3
0
0
1
1
Port /LED2
0
0
1
1
Port/ LED1
0
0
1
1
Port/ LED0
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
5
LED2
Configuration
Standard C51 Port
2 mA current source when P3.7 is low
4 mA current source when P3.7 is low
10 mA current source when P3.7 is low
Configuration
Standard C51 Port
2 mA current source when P3.6 is low
4 mA current source when P3.6 is low
10 mA current source when P3.6 is low
Configuration
Standard C51 Port
2 mA current source when P3.5 is low
4 mA current source when P3.5 is low
10 mA current source when P3.5 is low
Configuration
Standard C51 Port
2 mA current source when P3.3 is low
4 mA current source when P3.3 is low
10 mA current source when P3.3 is low
4
3
LED1
2
1
LED0
7683C–USB–11/07
0