Rainbow Electronics AT89C5122 - Manual (Page 63)

63
AT8xC5122/23
4202E–SCR–06/06
Reset Value = 0000 0000b
Reset Value = 0000 0000b
Table 40. LED Port Control Register 0 - LEDCON0 (F1h)
7 6 5 4 3 2 1 0
LED3.1 LED3.0 LED2.1 LED2.0 LED1.1 LED1.0 LED0.1 LED0.0
Bit Number Bit Mnemonic Description
7 - 6 LED3
Port LED3 Configuration bits
00 LED control disabled
01 2 mA current source when P3.7 is configured as Quasi-bi-directional mode
10 4 mA current source when P3.7 is configured as Quasi-bi-directional mode
11 10 mA current source when P3.7 is configured as Quasi-bidirect. mode
5 - 4 LED2
Port LED2 Configuration bits
00 LED control disabled
01 2 mA current source when P3.6 is configured as Quasi-bi-directional mode
10 4 mA current source when P3.6 is configured as Quasi-bi-directional mode
11 10 mA current source when P3.6 is configured as Quasi-bidirect. mode
3 - 2 LED1
Port LED1 Configuration bits
00 LED control disabled
01 2 mA current source when P3.4 is configured as Quasi-bi-directional mode
10 4 mA current source when P3.4 is configured as Quasi-bi-directional mode
11 10 mA current source when P3.4 is configured as Quasi-bidirect. mode
1 - 0 LED0
Port LED0 Configuration bits
00 LED control disabled
01 2 mA current source when P3.2 is configured as Quasi-bi-directional mode
10 4 mA current source when P3.2 is configured as Quasi-bi-directional mode
11 10 mA current source when P3.2 is configured as Quasi-bidirect. mode
Table 41. LED Port Control Register 1- LEDCON1 (F1h) only for AT8xC5122
7 6 5 4 3 2 1 0
- - LED6.1 LED6.0 LED5.1 LED5.0 LED4.1 LED4.0
Bit Number Bit Mnemonic Description
7 - 6
Reserved
The value read from this bit is indeterminate. Do not set this bit.
5 - 4 LED6
Port LED6 Configuration bits
00 LED control disabled
01 2 mA current source when P4.5 is configured as Quasi-bi-directional mode
10 4 mA current source when P4.5 is configured as Quasi-bi-directional mode
11 10 mA current source when P4.5 is configured as Quasi-bidirect. mode
3 - 2 LED5
Port LED5 Configuration bits
00 LED control disabled
01 2 mA current source when P4.4 is configured as Quasi-bi-directional mode
10 4 mA current source when P4.4 is configured as Quasi-bi-directional mode
11 10 mA current source when P4.4 is configured as Quasi-bidirect. mode
1 - 0 LED4
Port LED0 Configuration bits
00 LED control disabled
01 2 mA current source when P4.3 is configured as Quasi-bi-directional mode
10 4 mA current source when P4.3 is configured as Quasi-bi-directional mode
11 10 mA current source when P4.3 is configured as Quasi-bidirect. mode