mc68hc908kx8 Freescale Semiconductor, Inc, mc68hc908kx8 Datasheet - Page 198

• Manufacturer Part Number: mc68hc908kx8
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Notes:
1. Pin contains integrated pullup resistor.
2. High-current source/sink pin
3. Pin contains software selectable pullup resistor if general function I/O pin is configured as input.
4. Pins are used for external clock source or crystal/ceramic resonator option.
IRQ1
V
V
DD
SS
(1)
CONTROL AND STATUS REGISTERS — 78 BYTES
REGISTERS
USER ROM VECTOR SPACE — 36 BYTES
CPU
MONITOR ROM — 296 BYTES
USER ROM — 7680 BYTES
USER RAM — 192 BYTES
M68HC08 CPU
POWER
INTERNAL CLOCK GENERATOR
SOFTWARE SELECTABLE
SYSTEM INTEGRATION
MODULE
MODULE
MODULE
ARITHMETIC/LOGIC
IRQ
UNIT
Figure B-1. M68HC08KX8 MCU Block Diagram
SERIAL COMMUNICATION INTERFACE
COMPUTER OPERATING PROPERLY
ANALOG-TO-DIGITAL CONVERTER
2-CHANNEL TIMER INTERFACE
PROGRAMMABLE TIMEBASE
KEYBOARD INTERRUPT
LOW-VOLTAGE INHIBIT
SINGLE BRKPT BREAK
POWER-ON RESET
INTERNAL BUS
SECURITY
MODULE
MODULE
MODULE
MODULE
MODULE
MODULE
MODULE
MODULE
MODULE
MODULE
PTB5/TxD
PTB6/(OSC1)
PTB0/AD0
PTB1/AD1
PTB2/AD2
PTB3/AD3
PTB4/RxD
PTB7/(OSC2)
PTA0/KBD0
PTA1/KBD1
PTA2/KBD2/TCH0
PTA3/KBD3/TCH1
PTA4/KBD4
(2), (3)
(2), (3)
(2), (3)
(4)
(4)
(2), (3)
(2), (3)