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MC68HC08JL8MFA Datasheet(PDF) 2 Page - Freescale Semiconductor, Inc

Part # MC68HC08JL8MFA
Description  Microcontrollers
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC68HC08JL8MFA Datasheet(HTML) 2 Page - Freescale Semiconductor, Inc

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HC908JL8AD/D
Addendum to MC68HC908JL8 Technical Data
MCU Block Diagram
Figure 1 shows the block diagram of the MC68HC08JL8.
Memory Map
The MC68HC08JL8 has 8,192 bytes of user ROM from $DC00 to $FBFF, and
36 bytes of user ROM vectors from $FFDC to $FFFF. On the MC68HC908JL8,
these memory locations are FLASH memory.
Figure 2 shows the memory map of the MC68HC08JL8.
Figure 1. MC68HC08JL8 Block Diagram
SYSTEM INTEGRATION
MODULE
ARITHMETIC/LOGIC
UNIT (ALU)
CPU
REGISTERS
M68HC08 CPU
CONTROL AND STATUS REGISTERS — 64 BYTES
EXTERNAL INTERRUPT
MODULE
INTERNAL BUS
* RST
* IRQ
POWER
VSS
2-CHANNEL TIMER INTERFACE
MODULE 1
KEYBOARD INTERRUPT
MODULE
8-BIT ANALOG-TO-DIGITAL
CONVERTER MODULE
VDD
ADC REFERENCE
PTB7/ADC7
PTB6/ADC6
PTB5/ADC5
PTB4/ADC4
PTB3/ADC3
PTB2/ADC2
PTB1/ADC1
PTB0/ADC0
PTA6/KBI6**¥
PTA5/KBI5**
PTA4/KBI4**
PTA3/KBI3**
PTA2/KBI2**
PTA1/KBI1**
PTA0/KBI0**
POWER-ON RESET
MODULE
* Pin contains integrated pull-up device.
** Pin contains programmable pull-up device.
‡ LED direct sink pin.
OSC1
¥ OSC2/RCCLK
CRYSTAL OSCILLATOR
RC OSCILLATOR
PTD7/RxD**†‡
PTD6/TxD**†‡
PTD5/T1CH1
PTD4/T1CH0
PTD3/ADC8
PTD2/ADC9
PTD1/ADC10
PTD0/ADC11
BREAK
MODULE
COMPUTER OPERATING
PROPERLY MODULE
# Pins available on 32-pin packages only.
¥ Shared pin: OSC2/RCCLK/PTA6/KBI6.
PTA7/KBI7**
LOW-VOLTAGE INHIBIT
MODULE
SERIAL COMMUNICATIONS
INTERFACE MODULE
PTE1/T2CH1
PTE0/T2CH0
INTERNAL OSCILLATOR
ADC12/T2CLK
2-CHANNEL TIMER INTERFACE
MODULE 2
USER RAM — 256 BYTES
MONITOR ROM — 447 BYTES
#
##
#
##
#
## Pins available on 28-pin and 32-pin packages only.
† 25mA open-drain if output pin.
USER ROM — 8,192 BYTES
USER ROM VECTORS — 36 BYTES
Shaded blocks indicate differences to MC68HC908JL8
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


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