MC908AP32CFBE Datasheet, PDF (21/324 Pages) Freescale Semiconductor, Inc – The following revision history table summarizes changes contained in this document. For your convenience, the page number designators have been linked to the appropriate location.

MCU Block Diagram
CPU
REGISTERS
M68HC08 CPU
ARITHMETIC/LOGIC
UNIT (ALU)
CONTROL AND STATUS REGISTERS — 96 BYTES
USER FLASH — (SEE TABLE)
INTERNAL BUS
10-BIT ANALOG-TO-DIGITAL
CONVERTER MODULE
TIMEBASE
MODULE
PTA7/ADC7 ^‡
PTA6/ADC6 ^‡
PTA5/ADC5 ^‡
PTA4/ADC4 ^‡
PTA3/ADC3 ^‡
PTA2/ADC2 ^‡
PTA1/ADC1 ^‡
PTA0/ADC0 ^‡
USER RAM — (SEE TABLE)
MONITOR ROM — 959 BYTES
USER FLASH VECTOR SPACE — 48 BYTES
OSC1
OSC2
CGMXFC
OSCILLATORS AND
CLOCK GENERATOR MODULE
INTERNAL OSCILLATOR
RC OSCILLATOR
X-TAL OSCILLATOR
PHASE-LOCKED LOOP
* RST
* IRQ1
** IRQ2
SYSTEM INTEGRATION
MODULE
EXTERNAL INTERRUPT
MODULE
COMPUTER OPERATING
PROPERLY MODULE
POWER-ON RESET
MODULE
2-CHANNEL TIMER INTERFACE
MODULE 1
2-CHANNEL TIMER INTERFACE
MODULE 2
SERIAL COMMUNICATIONS
INTERFACE MODULE 1
MULTI-MASTER IIC (SMBUS)
INTERFACE MODULE
SERIAL COMMUNICATIONS
INTERFACE MODULE 2
(WITH INFRARED
MODULATOR/DEMODULATOR)
SERIAL PERIPHERAL
INTERFACE MODULE
KEYBOARD INTERRUPT
MODULE
LOW-VOLTAGE INHIBIT
MODULE
PTB7/T2CH1
PTB6/T2CH0
PTB5/T1CH1
PTB4/T1CH0
PTB3/RxD ^†
PTB2/TxD ^†
PTB1/SCL ^†
PTB0/SDA ^†
PTC7/SCRxD ^†
PTC6/SCTxD ^†
PTC5/SPSCK
PTC4/SS
PTC3/MOSI
PTC2/MISO
PTC1 ^#
PTC0/IRQ2 **^#
PTD7/KBI7 ***
PTD6/KBI6 ***
PTD5/KBI5 ***
PTD4/KBI4 ***
PTD3/KBI3 ***
PTD2/KBI2 ***
PTD1/KBI1 ***
PTD0/KBI0 ***
VDD
VDDA
VSS
VSSA
VREG
VREFH
VREFL
POWER
ADC REFERENCE
* Pin contains integrated pullup device.
** Pin contains configurable pullup device.
*** Pin contains integrated pullup device when configured as KBI.
† _{Pin is open-drain when configured as output.}
‡ _{LED direct sink pin.}
# _{Pin not bonded on 42-pin SDIP.}
DEVICE
MC68HC908AP64
MC68HC908AP32
MC68HC908AP16
MC68HC908AP8
.
USER RAM
(bytes)
2,048
2,048
1,024
1,024
USER FLASH
(bytes)
62,368
32,768
16,384
8,192
Figure 1-1. MC68HC908AP64 Block Diagram
MC68HC908AP Family Data Sheet, Rev. 4
Freescale Semiconductor
21