MC68HC908GT16_07 Datasheet, PDF (102/292 Pages) Freescale Semiconductor, Inc – Microcontrollers

External Interrupt (IRQ)
M68HC08 CPU
CPU
REGISTERS
ARITHMETIC/LOGIC
UNIT (ALU)
CONTROL AND STATUS
REGISTERS — 64 BYTES
USER FLASH
MC68HC908GT16 — 15,872 BYTES
MC68HC908GT8 — 7,680 BYTES
USER RAM — 512 BYTES
MONITOR ROM — 304 BYTES
FLASH PROGRAMMING ROUTINES
ROM — 720 BYTES
USER FLASH VECTOR SPACE — 36 BYTES
PTE4/OSC1
PTE3/OSC2
INTERNAL CLOCK
GENERATOR MODULE
RST⁽³⁾
IRQ⁽³⁾
V_REFH
V_REFL
V_DD
V_SS
V_DDA
V_SSA
SYSTEM INTEGRATION
MODULE
SINGLE EXTERNAL
INTERRUPT MODULE
8-BIT ANALOG-TO-DIGITAL
CONVERTER MODULE
POWER-ON RESET
MODULE
POWER
INTERNAL BUS
PROGRAMMABLE TIMEBASE
MODULE
SINGLE BREAKPOINT BREAK
MODULE
DUAL VOLTAGE
LOW-VOLTAGE INHIBIT MODULE
8-BIT KEYBOARD
INTERRUPT MODULE
2-CHANNEL TIMER INTERFACE
MODULE 1
2-CHANNEL TIMER INTERFACE
MODULE 2
SERIAL COMMUNICATIONS
INTERFACE MODULE
COMPUTER OPERATING
PROPERLY MODULE
SERIAL PERIPHERAL
INTERFACE MODULE
MONITOR MODULE
MEMORY MAP
MODULE
CONFIGURATION REGISTER 1
MODULE
CONFIGURATION REGISTER 2
MODULE
PTA7/KBD7–
PTA0/KBD0⁽¹⁾
PTB7/AD7
PTB6/AD6
PTB5/AD5
PTB4/AD4
PTB3/AD3
PTB2/AD2
PTB1/AD1
PTB0/AD0
PTC6⁽¹⁾
PTC5⁽¹⁾
PTC4⁽¹⁾⁽²⁾
PTC3⁽¹⁾⁽²⁾
PTC2⁽¹⁾⁽²⁾
PTC1⁽¹⁾⁽²⁾
PTC0⁽¹⁾⁽²⁾
PTD7/T2CH1⁽¹⁾
PTD6/T2CH0⁽¹⁾
PTD5/T1CH1⁽¹⁾
PTD4/T1CH0⁽¹⁾
PTD3/SPSCK⁽¹⁾
PTD2/MOSI⁽¹⁾
PTD1/MISO⁽¹⁾
PTD0/SS⁽¹⁾
PTE2
PTE1/RxD
PTE0/TxD
SECURITY
MODULE
MONITOR MODE ENTRY
MODULE
1. Ports are software configurable with pullup device if input port.
2. Higher current drive port pins
3. Pin contains integrated pullup device
Figure 8-1. Block Diagram Highlighting IRQ Block and Pins
MC68HC908GT16 • MC68HC908GT8 • MC68HC08GT16 Data Sheet, Rev. 5.0
102
Freescale Semiconductor