MC68HC05K0 Datasheet, PDF (20/154 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Technical Data
Freescale Semiconductor, Inc.
1.5 MCU Structure
Figure 1-1 shows the structure of the MC68HC05K0 and
MC68HC05K1.
USER ROM — 504 BYTES
V_PP
PERSONALITY EPROM/OTPROM— 64 BITS
(MC68HC05K1 ONLY)
USER RAM — 32 BYTES
IRQ/V_PP
RESET
CPU CONTROL
ARITHMETIC/LOGIC
UNIT
RESET
M68HC05
MCU
ACCUMULATOR
REGISTER
STACK POINTER
0 00 00000111
PROGRAM COUNTER
00 0 000
CONDITION CODE REGISTER
1 1 1 H I NCZ
COP WATCHDOG
AND
ILLEGAL ADDRESS
DETECT
MULTIFUNCTION
TIMER
PA7*
PA6*
PA5*
PA4*
PA3**
PA2**
PA1**
PA0**
*8-mA sink capability
**External interrupt capability
PB1/OSC3
PB0
V_DD
LOW-VOLTAGE
DETECT
V_SS
OSC1
OSC2
INTERNAL
DIVIDE
OSCILLATOR f_osc BY TWO f_op
OSC3
Figure 1-1. MC68HC05K0 and MC68HC05K1 Block Diagram
Technical Data
MC68HC05K0 • MC68HC05K1 — Rev. 2.0
General Description
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