at83c5122 ATMEL Corporation, at83c5122 Datasheet - Page 62

• Manufacturer Part Number: at83c5122
• Description: At83c5123 C51 Microcontroller With Usb And Smart Card Reader Interfaces
• Manufacturer: ATMEL Corporation

62
AT8xC5122/23
Table 38. Port Mode Register 1 - PMOD1 (84h) for AT8xC5122
Reset Value = 0000 0000b
Table 39. Port Mode Register 1 - PMOD1 (84h) for AT83C5123
Reset Value = xxxx 00xxb
Bit Number
Bit Number
P5HC1
7
7 - 6
5 - 4
3 - 2
1 - 0
7
7 - 4
3 - 2
1 - 0
-
P5HC0
Bit Mnemonic
P5MC1-P5MC0
Bit Mnemonic
P5HC1-P5HC0
P5LC1-P5LC0
P5LC1-P5LC0
6
P4C1-P4C0
6
-
P5MC1
5
5
-
Description
Port 5 High Configuration bits (Applicable from P5.6 to P5.7 only)
00 Quasi bi-directional
01 Push-pull
10 Input with weak pull-down
11 Input with weak pull-up
Port 5 Medium Configuration bits (Applicable from P5.3 to P5.5 only)
00 Quasi bi-directional
01 Push-pull
10 Input with weak pull-down
11 Input with weak pull-up
Port 5 Low Configuration bits (Applicable from P5.0 to P5.2 only)
00 Quasi bi-directional
01 Push-pull
10 Input with medium pull-up
11 Input with weak pull-up
Port 4 Configuration bits (Applicable from P4.3 to P4.5 only)
00 Quasi bi-directional
01 Push-pull
10 Output Low Speed
11 Input with medium pull-up
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Port 5 Low Configuration bits (Applicable from P5.0 to P5.2 only)
00 Quasi bi-directional
01 Push-pull
10 Input with medium pull-up
11 Input with weak pull-up
Reserved
The value read from this bit is indeterminate. Do not set this bit.
P5MC0
4
4
-
P5LC1
P5LC1
3
3
P5LC0
P5LC0
2
2
P4C1
1
1
-
4202E–SCR–06/06
P4C0
0
0
-