MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 26

• Manufacturer Part Number: MC908AP32CFBE
• Manufacturer: Freescale

Specifications of MC908AP32CFBE

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI/SPI
• Total Internal Ram Size: 2KB
• # I/os (max): 32
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: PQFP
• Program Memory Type: Flash
• Program Memory Size: 32KB
• Lead Free Status / RoHS Status: Compliant

General Description
1.6 Power Supply Bypassing (VDD, VDDA, VSS, VSSA)
V
together with an on chip voltage regulator.
Fast signal transitions on MCU pins place high. short-duration current demands on the power supply. To
prevent noise problems, take special care to provide power supply bypassing at the MCU as
shows. Place the bypass capacitors as close to the MCU power pins as possible. Use
high-frequency-response ceramic capacitor for C
capacitors for use in applications that require the port pins to source high current level.
26
1. See
DD
PTC5/SPSCK
PTC7/SCRxD
PTB4/T1CH0
PTB5/T1CH1
PTB6/T2CH0
PTB7/T2CH1
PTC6/SCTxD
PTC2/MISO
PTC3/MOSI
PTC0/IRQ2
PIN NAME
PTD0/KBI0
PTD7/KBI7
PTB0/SDA
PTB1/SCL
PTB2/TxD
PTB3/RxD
and V
PTC4/SS
PTC1
Chapter 22 Electrical Specifications
:
SS
are the power supply and ground pins, the MCU operates from a single power supply
8-bit general purpose I/O port; PTB0–PTB3 are open drain when
configured as output. PTB4–PTB7 have schmitt trigger inputs.
PTB0 as SDA of MMIIC.
PTB1 as SCL of MMIIC.
PTB2 as TxD of SCI; open drain output.
PTB3 as RxD of SCI.
PTB4 as T1CH0 of TIM1.
PTB5 as T1CH1 of TIM1.
PTB6 as T2CH0 of TIM2.
PTB7 as T2CH1 of TIM2.
8-bit general purpose I/O port; PTC6 and PTC7 are open drain
when configured as output.
PTC0 is shared with IRQ2 and has schmitt trigger input.
PTC2 as MISO of SPI.
PTC3 as MOSI of SPI.
PTC4 as SS of SPI.
PTC5 as SPSCK of SPI.
PTC6 as SCTxD of IRSCI; open drain output.
PTC7 as SCRxD of IRSCI.
8-bit general purpose I/O port with schmitt trigger inputs.
Pins as keyboard interrupts (with pullup), KBI0–KBI7.
MC68HC908AP Family Data Sheet, Rev. 4
for V
PIN DESCRIPTION
Table 1-2. Pin Functions
REG
tolerance.
BYPASS
, C
BULK
are optional bulk current bypass
IN/OUT
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
Out
Out
Out
In
In
In
In
In
In
Freescale Semiconductor
VOLTAGE
Figure 1-5
LEVEL
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD