mc9s12c32mpb16 Freescale Semiconductor, Inc, mc9s12c32mpb16 Datasheet - Page 145

• Manufacturer Part Number: mc9s12c32mpb16
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

4.3.2.10
Read: Anytime (provided this register is in the map).
Write: Anytime (provided this register is in the map).
This register is used to select pull resistors for the pins associated with the core ports. Pull resistors are
assigned on a per-port basis and apply to any pin in the corresponding port that is currently configured as
an input. The polarity of these pull resistors is determined by chip integration. Please refer to the device
overview chapter to determine the polarity of these resistors.
Freescale Semiconductor
Module Base + 0x000C
Starting address location affected by INITRG register setting.
MODC
1. No writes to the MOD bits are allowed while operating in a secure mode. For more details, refer to the device over-
2. If you are in a special single-chip or special test mode and you write to this register, changing to normal single-chip
0
0
0
0
1
1
1
1
Reset
view chapter.
mode, then one allowed write to this register remains. If you write to normal expanded or emulation mode, then no
writes remain.
W
R
1
MODB
Pull Control Register (PUCR)
PUPKE
0
0
1
1
0
0
1
1
NOTES:
1. The default value of this parameter is shown. Please refer to the device overview chapter to deter-
1
7
mine the actual reset state of this register.
MODA
= Unimplemented or Reserved
0
1
0
1
0
1
0
1
Table 4-8. MODC, MODB, and MODA Write Capability
0
0
6
Figure 4-14. Pull Control Register (PUCR)
Normal expanded narrow
Normal expanded wide
MC9S12C-Family / MC9S12GC-Family
Special single chip
Normal single chip
Special peripheral
Emulation narrow
Emulation wide
Special test
0
0
5
Mode
Rev 01.23
PUPEE
1
4
Chapter 4 Multiplexed External Bus Interface (MEBIV3)
3
0
0
write anytime but not to 110
write anytime but not to 110
MODB and MODA write once
MODC, MODB, and MODA
MODC, MODB, and MODA
MODx Write Capability
MODC write never,
2
0
0
but not to 110
(1)
No write
No write
No write
No write
No write
PUPBE
0
1
(2)
(2)
PUPAE
0
0
145