MC9S12E256MPVE Freescale Semiconductor, MC9S12E256MPVE Datasheet - Page 140

• Manufacturer Part Number: MC9S12E256MPVE
• Description: IC MCU 256K FLASH 25MHZ 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12E256MPVE

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, I²C, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 91
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 2.75 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 112-LQFP
• Processor Series: S12E
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 16 KB
• Interface Type: I2C/SCI/SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 92
• Number Of Timers: 12
• Operating Supply Voltage: 0 V to 5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• On-chip Dac: 2-ch x 8-bit
• For Use With: M68EVB912E128 - BOARD EVAL FOR MC9S12E128/64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Chapter 3 Port Integration Module (PIM9E256V1)
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.
140
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
MC9S12E256 Data Sheet, Rev. 1.08
0
5
WOMM4
0
4
Description
3
0
0
0
0
2
Freescale Semiconductor
0
0
1
0
0
0