Rainbow Electronics AT89C5122 User Manual

Page 63

AT8xC5122/23

4202E–SCR–06/06

Reset Value = 0000 0000b

Table 40. LED Port Control Register 0 - LEDCON0 (F1h)

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

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