AT83EC5123 ATMEL Corporation, AT83EC5123 Datasheet - Page 17

• Manufacturer Part Number: AT83EC5123
• Description: (AT8xx512x) Smart Card Reader ICs
• Manufacturer: ATMEL Corporation

Registers
4202B–SCR–07/03
Table 8. LED Source Current
Table 9. Port Mode Register 0 - PMOD0 (91h) for AT8xC5122
Reset Value = 0000 0x00b
Bit Number Bit Mnemonic Description
LEDx.1
P3C1
7 - 6
7
5-4
1-0
0
0
0
0
1
1
1
1
3
2
CPRESRES
P3C1-P3C0
P2C1-P2C0
P0C1-P0C0
P3C0
LEDx.0
6
0
0
1
1
0
0
1
1
-
Port Latch Data
P2C1
Port 3 Configuration bits (Applicable to P3.0, P3.1, P3.3, P3.4 only)
00 Quasi bi-directional
01 Push-pull
10 Output Low Speed
11 Input with weak pull-up
Port 2 Configuration bits
00 Quasi bi-directional
01 Push-pull
10 Output Low Speed
11 Input with weak pull-down
Card Presence Pull-up resistor
Cleared to connect the internal pull-up
Set to disconnect the internal pull-up
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Port 0 Configuration bits
00 C51 Standard P0
01 Reserved
10 Output Low Speed
11 Push-pull
5
0
1
0
1
0
1
0
1
P2C0
4
NMOS
CPRESRES
1
0
0
0
0
0
0
0
3
PIN
0
1
0
1
0
1
0
1
AT8xC5122/23
2
-
LED control disabled
LED mode 10 mA
LED mode 2 mA
LED mode 4 mA
Comments
P0C1
1
P0C0
0
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