MC68HC912B32CFU8 Freescale Semiconductor, MC68HC912B32CFU8 Datasheet - Page 92

• Manufacturer Part Number: MC68HC912B32CFU8
• Description: IC MCU 32K FLASH 8MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC68HC912B32CFU8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 768 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Bus Control and Input/Output (I/O)
6.3.9 Reduced Drive of I/O Lines
Read: Anytime, if register is in the map
Write: Once in normal modes; anytime, except the first time, in special modes
These bits select reduced drive for the associated port pins. This gives reduced power consumption and
reduced radio frequency interference (RFI) with a slight increase in transition time (depending on loading).
The reduced drive function is independent of which function is being used on a particular port. This
register is not in the map in peripheral mode.
RDPE — Reduced Drive of Port E Bit
RDPB — Reduced Drive of Port B Bit
RDPA — Reduced Drive of Port A Bit
92
1 = Reduced drive for all port E output pins
0 = Full drive for all port E output pins
1 = Reduced drive for all port B output pins
0 = Full drive for all port B output pins
1 = Reduced drive for all port A output pins
0 = Full drive for all port A output pins
Address: $000D
Reset:
Read:
Write:
Bit 7
0
0
Figure 6-9. Reduced Drive of I/O Lines (RDRIV)
= Unimplemented
6
0
0
M68HC12B Family Data Sheet, Rev. 9.1
5
0
0
4
0
0
RDPE
3
0
2
0
0
RDPB
1
0
Freescale Semiconductor
RDPA
Bit 0
0