MC68HC908JL3E Datasheet, PDF (26/226 Pages) Motorola, Inc – Microcontrollers

General Description
1.4 MCU Block Diagram
Figure 1-1 shows the structure of the MC68H(R)C908JL3E.
CPU
REGISTERS
M68HC08 CPU
ARITHMETIC/LOGIC
UNIT (ALU)
CONTROL AND STATUS REGISTERS — 64 BYTES
USER FLASH:
MC68H(R)C908JK3E/JL3E — 4,096 BYTES
MC68H(R)C908JK1E — 1,536 BYTES
USER RAM — 128 BYTES
MONITOR ROM — 960 BYTES
USER FLASH VECTOR SPACE — 48 BYTES
OSC1
Â¥ _OSC2
MC68HC908JL3E/JK3E/JK1E
X-TAL OSCILLATOR
MC68HRC908JL3E/JK3E/JK1E
RC OSCILLATOR
* RST
* IRQ1
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**^‡
PTA4/KBI4**^‡
PTA3/KBI3**^‡
PTA2/KBI2**^{‡ #}
PTA1/KBI1**^‡
PTA0/KBI0**^‡
PTB7/ADC7
PTB6/ADC6
PTB5/ADC5
PTB4/ADC4
PTB3/ADC3
PTB2/ADC2
PTB1/ADC1
PTB0/ADC0
PTD7**^†‡
PTD6**^†‡
PTD5/TCH1
PTD4/TCH0
PTD3/ADC8^‡
PTD2/ADC9^‡
PTD1/ADC10 _#
PTD0/ADC11
VDD
POWER
VSS
ADC REFERENCE
* Pin contains integrated pull-up device.
** Pin contains programmable pull-up device.
† 25mA open-drain if output pin.
‡ LED direct sink pin.
# Pins available on MC68H(R)C908JL3E only.
¥ Shared pin: MC68HC908JL3E/JK3E/JK1E — OSC2
MC68HRC908JL3E/JK3E/JK1E — RCCLK/PTA6/KBI6
Figure 1-1. MCU Block Diagram
Technical Data
26
MC68H(R)C908JL3E/JK3E/JK1E — Rev. 2.0
General Description
MOTOROLA