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MC68HC908JL3 Datasheet, PDF (17/180 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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1.3 MCU Block Diagram
Figure 1-1 shows the structure of the MC68H(R)C908JL3E.
MCU Block Diagram
CPU
REGISTERS
M68HC08 CPU
ARITHMETIC/LOGIC
UNIT (ALU)
CONTROL AND STATUS REGISTERS â 64 BYTES
USER FLASH:
MC68H(R)C908JK3E/JL3E â 4,096 BYTES
MC68H(R)C908JK1E â 1,536 BYTES
USER RAM â 128 BYTES
MONITOR ROM â 960 BYTES
USER FLASH VECTOR SPACE â 48 BYTES
OSC1
Â¥ OSC2
MC68HC908JL3E/JK3E/JK1E
X-TAL OSCILLATOR
MC68HRC908JL3E/JK3E/JK1E
RC OSCILLATOR
* RST
* IRQ
SYSTEM INTEGRATION
MODULE
EXTERNAL INTERRUPT
MODULE
INTERNAL BUS
KEYBOARD INTERRUPT
MODULE
8-BIT ANALOG-TO-DIGITAL
CONVERTER MODULE
2-CHANNEL TIMER INTERFACE
MODULE
BREAK
MODULE
COMPUTER OPERATING
PROPERLY MODULE
POWER-ON RESET
MODULE
LOW-VOLTAGE INHIBIT
MODULE
PTA6/KBI6**Â¥
PTA5/KBI5**â¡
PTA4/KBI4**â¡
PTA3/KBI3**â¡
PTA2/KBI2**â¡ #
PTA1/KBI1**â¡
PTA0/KBI0**â¡
PTB7/ADC7
PTB6/ADC6
PTB5/ADC5
PTB4/ADC4
PTB3/ADC3
PTB2/ADC2
PTB1/ADC1
PTB0/ADC0
PTD7**â â¡
PTD6**â â¡
PTD5/TCH1
PTD4/TCH0
PTD3/ADC8â¡
PTD2/ADC9â¡
PTD1/ADC10
PTD0/ADC11 #
VDD
POWER
VSS
ADC REFERENCE
* Pin contains integrated pull-up device.
** Pin contains programmable pull-up device.
â 25mA open-drain if output pin.
â¡ LED direct sink pin.
# Pins available on MC68H(R)C908JL3E only.
Â¥ Shared pin: MC68HC908JL3E/JK3E/JK1E â OSC2
MC68HRC908JL3E/JK3E/JK1E â RCCLK/PTA6/KBI6
Figure 1-1. MCU Block Diagram
MC68HC908JL3E Family Data Sheet, Rev. 4
Freescale Semiconductor
17
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