mc68hc908gr8b Freescale Semiconductor, Inc, mc68hc908gr8b Datasheet - Page 214

• Manufacturer Part Number: mc68hc908gr8b
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Development Support
214
1. Ports are software configurable with pullup device if input port.
2. Higher current drive port pins
3. Pin contains integrated pullup device
FLASH PROGRAMMING (BURN-IN) ROM — 544 BYTES
V
V
DDAD
CONTROL AND STATUS REGISTERS — 64 BYTES
SSAD
CGMXFC
USER FLASH VECTOR SPACE — 36 BYTES
REGISTERS
/V
RST
/V
IRQ
OSC1
OSC2
V
V
REFH
REFL
V
V
DDA
SSA
CPU
DD
SS
(3)
(3)
MONITOR ROM — 310 BYTES
USER FLASH — 7680 BYTES
USER RAM — 384 BYTES
M68HC08 CPU
CLOCK GENERATOR MODULE
8-BIT ANALOG-TO-DIGITAL
Figure 18-1. Block Diagram Highlighting BRK and MON Blocks
SYSTEM INTEGRATION
PHASE LOCKED LOOP
CONVERTER MODULE
1–8-MHz OSCILLATOR
INTERRUPT MODULE
SINGLE EXTERNAL
POWER-ON RESET
ARITHMETIC/LOGIC
MODULE
MODULE
POWER
UNIT (ALU)
MC68HC908GR8B Data Sheet, Rev. 3.0
CONFIGURATION REGISTER 1
CONFIGURATION REGISTER 2
PROGRAMMABLE TIMEBASE
SERIAL COMUNICATIONS
COMPUTER OPERATING
LOW-VOLTAGE INHIBIT
INTERFACE MODULE 1
INTERFACE MODULE 2
SINGLE BREAKPOINT
INTERRUPT MODULE
INTERFACE MODULE
SERIAL PERIPHERAL
INTERFACE MODULE
PROPERLY MODULE
MONITOR MODULE
2-CHANNEL TIMER
1-CHANNEL TIMER
BREAK MODULE
4-BIT KEYBOARD
DUAL VOLTAGE
INTERNAL BUS
MEMORY MAP
MODULE
MODULE
MODULE
MODULE
MODULE
Freescale Semiconductor
MONITOR MODE ENTRY
SECURITY
MODULE
MODULE
PTA3/KBD3–
PTA0/KBD0
PTB5/AD5
PTB4/AD4
PTB3/AD3
PTB2/AD2
PTB1/AD1
PTB0/AD0
PTC1
PTC0
PTD6/T2CH0
PTD5/T1CH1
PTD4/T1CH0
PTD3/SPSCK
PTD2/MOSI
PTD1/MISO
PTD0/SS
PTE1/RxD
PTE0/TxD
(1), (2)
(1), (2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)