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M68HC05 Datasheet(PDF) 20 Page - Freescale Semiconductor, Inc

Part # M68HC05
Description  Microcontrollers
PDF  128 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68HC05 Datasheet(HTML) 20 Page - Freescale Semiconductor, Inc

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Technical Data
MC68HC05J1A — Rev. 3.0
General Description
General Description
1.5 MCU Structure
Figure 1-1 shows the structure of the MC68HC05J1A MCU.
Figure 1-1. MC68HC05J1A Block Diagram
PB5
PB4
PB3
PB2
PB1
PB0
0
00
0
00
0 011
CPU CONTROL
ARITHMETIC/LOGIC
UNIT
ACCUMULATOR
INDEX REGISTER
STACK POINTER
0 00
PROGRAM COUNTER
00
M68HC05
MCU
RESET
CONDITION CODE REGISTER
111H I
N C Z
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
*
*
*
*
**
**
**
**
* 8-mA sink capability
** External interrupt capability
COP WATCHDOG
AND
INTERNAL
OSCILLATOR
DIVIDE
BY TWO
MULTIFUNCTION
TIMER
ILLEGAL ADDRESS
DETECT
POWER
INTERNAL CLOCK
IRQ
VDD
VSS
OSC1
OSC2
USER ROM — 1240 BYTES
USER RAM — 64 BYTES
RESET
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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