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| MC68HC08LT8 Datasheet, PDF (15/156 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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M68HC08 CPU
CPU
REGISTERS
ARITHMETIC/LOGIC
UNIT (ALU)
CONTROL AND STATUS REGISTERS â 96 BYTES
USER ROM â 8,192 BYTES
USER RAM â 128 BYTES
MONITOR ROM â 960 BYTES
USER ROM VECTOR SPACE â 48 BYTES
OSC1
OSC2
XTAL1
XTAL2
OSC MODULE
16-MHz OSCILLATOR
32.768-kHz OSCILLATOR
(1) RST
(1) IRQ
SYSTEM INTEGRATION
MODULE
EXTERNAL INTERRUPT
MODULE
COMPUTER OPERATING
PROPERLY MODULE
POWER-ON RESET
MODULE
LOW-VOLTAGE INHIBIT
MODULE
(4) VLCD
VDD
VSS
POWER
INTERNAL BUS
KEYBOARD INTERRUPT
MODULE
PROGRAMMABLE PERIODIC
INTERRUPT MODULE
2-CHANNEL TIMER INTERFACE
MODULE 1
2-CHANNEL TIMER INTERFACE
MODULE 2
LIQUID CRYSTAL DISPLAY
DRIVER MODULE
MCU Block Diagram
PTA7
PTA6
PTA5
PTA4
PTA3/KBI3(2)
PTA2/KBI2(2)
PTA1/KBI1(2)
PTA0/KBI0(2)
PTB7/FP2(4)
PTB6/FP1(4)
PTB3/T1CH1(3)
PTB2/T1CH0/PPIECK(3)
PTB1/T2CH1
PTB0/T2CH0
PTC7
PTC6
PTC5/FP24(4)
PTC4/FP23(4)
PTC3/FP22
PTC2/FP21
PTC1/FP20
PTC0/FP19
PTD7/FP18
:
PTD0/FP11
PTE7/FP10
:
PTE0/FP3
BP2
:
BP0
FP0/BP3
(1) Pin contains integrated pullup device.
(2) Pin contains integrated pullup device if configured as KBI.
(3) High current sink pin, 15mA.
(4) Pin not available on 44-pin packages
Figure 1-1. MC68HC08LT8 Block Diagram
MC68HC08LT8 Data Sheet, Rev. 1
Freescale Semiconductor
15
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