S912XEQ384J3MALR Freescale Semiconductor, S912XEQ384J3MALR Datasheet - Page 128

• Manufacturer Part Number: S912XEQ384J3MALR
• Description: S912XEQ Series 16 Bit 50 Mhz 384 KB Flash 24 KB Ram Microcontroller - LQFP-112
• Manufacturer: Freescale Semiconductor

1. Read: Anytime.
1. Read: Anytime.
Chapter 2 Port Integration Module (S12XEPIMV1)
2.3.33
2.3.34
128
Address 0x024C
Address 0x024D
Write: Anytime.
Write: Anytime.
PERS
PPSS
Field
Field
Reset
Reset
7-0
7-0
W
W
R
R
Port S pull device enable—Enable pull devices on input pins
These bits configure whether a pull device is activated, if the associated pin is used as an input. This bit has no effect
if the pin is used as an output. Out of reset all pull devices are enabled.
1 Pull device enabled.
0 Pull device disabled.
Port S pull device select—Determine pull device polarity on input pins
This register selects whether a pull-down or a pull-up device is connected to the pin.
1 A pull-down device is connected to the associated pin, if enabled and if the pin is used as input.
0 A pull-up device is connected to the associated pin, if enabled and if the pin is used as input.
PERS7
PPSS7
Port S Pull Device Enable Register (PERS)
Port S Polarity Select Register (PPSS)
1
0
7
7
PERS6
PPSS6
Figure 2-31. Port S Pull Device Enable Register (PERS)
1
0
6
6
Figure 2-32. Port S Polarity Select Register (PPSS)
Table 2-30. PERS Register Field Descriptions
Table 2-31. PPSS Register Field Descriptions
MC9S12XE-Family Reference Manual Rev. 1.24
PERS5
PPSS5
1
0
5
5
PERS4
PPSS4
1
0
4
4
Description
Description
PERS3
PPSS3
3
1
3
0
PERS2
PPSS2
1
0
2
2
Access: User read/write
Access: User read/write
Freescale Semiconductor
PERS1
PPSS1
1
0
1
1
PERS0
PPSS0
1
0
0
0
(1)
(1)