MC68HC705 MOTOROLA [Motorola, Inc], MC68HC705 Datasheet - Page 23

• Manufacturer Part Number: MC68HC705
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68HC705C8A — Rev. 2.0
MOTOROLA
RESET
OSC2
OSC1
* Port B pins also function as external interrupts.
† PC7 has a high current sink and source capability.
IRQ
V
V
V
PP
DD
SS
OSCILLATOR
EPROM PROGRAMMING
CONDITION CODE REGISTER
POWER
COP WATCHDOG
CLOCK MONITOR
CPU REGISTERS
CONTROL
CONTROL
AND
CPU
Figure 1-2. MC68HC705C8A Block Diagram
0
EPROM/OTPROM — 7744 BYTES
(144 BYTES CONFIGURABLE)
0
BOOT ROM — 240 BYTES
(304 BYTES MAXIMUM)
0
RAM — 176 BYTES
0
M68HC05 CPU
2
PROGRAM COUNTER
0
1
1
1
General Description
1
INDEX REGISTER
ACCUMULATOR
1
PROGRAM REGISTER
STACK POINTER
ARITHMETIC
LOGIC UNIT
H
PROCESSOR
INTERNAL
CLOCK
I
N
REGISTER
GENERATOR
OPTION
Z
BAUD RATE
C
CAPTURE/COMPARE
TIMER SYSTEM
16-BIT
SCI
SPI
General Description
Technical Data
Block Diagram
PD7
RDI (PD0)
TDO (PD1)
MISO (PD2)
MOSI (PD3)
SCK (PD4)
SS (PD5)
TCAP
TCMP
PB0
PB1
PB2
PB3
PB4
PB5
PC0
PC1
PC2
PC3
PC4
PC5
PC7†
PA0
PA1
PA2
PA3
PA4
PA5
PA7
PA6
PB6
PB7
PC6
*
*
*
*
*
*
*
*
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