MC9S12E128CPV Freescale Semiconductor, MC9S12E128CPV Datasheet - Page 141
MC9S12E128CPV
Manufacturer Part Number
MC9S12E128CPV
Description
Microcontrollers (MCU) 16 Bit 16MHz
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12E128CPV.pdf
(606 pages)
Specifications of MC9S12E128CPV
Data Bus Width
16 bit
Program Memory Type
Flash
Program Memory Size
128 KB
Data Ram Size
8 KB
Interface Type
SCI, SPI
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
92
Number Of Timers
16 bit
Operating Supply Voltage
3.135 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
LQFP-112
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
On-chip Dac
8 bit, 2 Channel
Lead Free Status / Rohs Status
No RoHS Version Available
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3.3.2.7
Read: Anytime. Write: Anytime.
This register selects whether a port M output is configured as push-pull or wired-or. When a Wired-OR
Mode Register bit is set to 1, the corresponding output pin is driven active low only (open drain) and a
high level is not driven. A Wired-OR Mode Register bit has no effect if the corresponding pin is configured
as an input.
These bits apply also to the SCI2 outputs and allow a multipoint connection of several serial modules.
If the IIC is enabled, the associated pins are always set to wired-or mode, and the state of the WOMM[7:6]
bits have no effect. The WOMM[7:6] bits will not change to reflect their wired-or mode configuration
when the IIC is enabled.
Freescale Semiconductor
WOMM[7:4]
Reset
Field
7:4
W
R
WOMM7
Wired-OR Mode Port M
0 Output buffers operate as push-pull outputs.
1 Output buffers operate as open-drain outputs.
Port M Wired-OR Mode Register (WOMM)
0
7
= Reserved or Unimplemented
WOMM6
0
6
Figure 3-16. Port M Wired-OR Mode Register (WOMM)
Table 3-13. WOMM Field Descriptions
WOMM5
MC9S12E128 Data Sheet, Rev. 1.07
0
5
WOMM4
0
4
Description
0
0
3
Chapter 3 Port Integration Module (PIM9E128V1)
0
0
2
0
0
1
0
0
0
141
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