S912XHY128F0VLM Datasheet, PDF (149/802 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Port Integration Module (S12XHYPIMV1)
1 _{Read: Anytime.}
Write: Anytime.
Table 2-77. PPSV Register Field Descriptions
Field
7-0
PPSV
Description
Port V pull device select—Determine pull device polarity on input pins
This register serves a dual purpose by selecting the polarity of the active interrupt edge as well as selecting a pull-up
or pull-down device if enabled.
1 A pull-down device is connected to the associated Port V pin, if enabled by the associated bit in register PERV and
if the port is used as input.
0 A pull-up device is connected to the associated Port V pin, if enabled by the associated bit in register PERV and if
the port is used as input.
2.3.95 Port V Slew Rate Register(SRRV)
Address 0x029E
R
W
Reset
7
SRRV7
0
1 _{Read: Anytime.}
Write: Anytime.
6
SRRV6
5
SRRV5
4
SRRV4
3
SRRV3
2
SRRV2
0
0
0
0
0
Figure 2-92. Port V Polarity Select Register (SRRV)
Access: User read/write¹
1
0
SRRV1
SRRV0
0
0
Table 2-78. SRRV Register Field Descriptions
Field
Description
7-0
SRRV
Port V Slew Rate Register—Determine the slew rate on the pins¹
1 Enable the slew rate control and disables the digital input buffer²
0 Disable the slew rate control and enable the digital input buffer
1 _{When change SRRV from non-zero value to zero value or vice versa, It will need to wait about 300 nanoseconds delay before}
the slew rate control to be real function as setting. When enter STOP, to save the power, the slew rate control will be force to off
state. After wakeup from STOP, it will also need to wait about 300 nanoseconds before slew rate control to be function as setting.
2 _{When MC function is disabled and IIC/SPI/PWM async shutdown are routing to PV and enabled, the corresponding digital input}
buffer will be always enabled
MC9S12XHY-Family Reference Manual, Rev. 1.01
Freescale Semiconductor
149