MC68HC908AT32 Datasheet, PDF (26/378 Pages) Freescale Semiconductor, Inc – Microcontrollers

M68HC08 CPU
CPU
REGISTERS
ARITHMETIC/LOGIC
UNIT (ALU)
CONTROL AND STATUS REGISTERS — 62 BYTES
USER FLASH — 20,480 BYTES
USER RAM — 640 BYTES
USER EEPROM — 512 BYTES
MONITOR ROM — 224 BYTES
USER FLASH VECTOR SPACE — 36 BYTES
OSC1
OSC2
CGMXFC
CLOCK GENERATOR
MODULE
RST
SYSTEM INTEGRATION
MODULE
IRQ
IRQ MODULE
V_SS
V_DD
V_DDAREF/ V_DDA
V_SSA/V_REFL
POWER-ON RESET
MODULE
POWER
V_REFH
ANALOG-TO-DIGITAL
MODULE
BREAK MODULE
LOW-VOLTAGE INHIBIT
MODULE
COMPUTER OPERATING
PROPERLY MODULE
TIMER A 6 CHANNEL
INTERFACE MODULE
SERIAL COMMUNICATIONS
INTERFACE MODULE
SERIAL PERIPHERAL INTERFACE
MODULE
BYTE DATA LINK CONTROLLER
PTA7–PTA0
PTB7/ATD7–PTB0/ATD0
PTC5–PTC3
PTC2/MCLK
PTC1–PTC0
PTD6/ATD14/TACLK
PTD5/ATD13
PTD4/ATD12
PTD3/ATD11
PTD2/ATD10
PTD1/ATD9–PTD0/ATD8
PTE7/SPSCK
PTE6/MOSI
PTE5/MISO
PTE4/SS
PTE3/TACH1
PTE2/TACH0
PTE1/RxD
PTE0/TxD
PTF3/TACH5
PTF2 /TACH4
PTF1/TACH3
PTF0/TACH2
Figure 1-2. MCU Block Diagram for the MC68HC08AS20 Emulator (52-Pin PLCC)