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| MC68HC705C8A Datasheet, PDF (23/222 Pages) Motorola, Inc – HCMOS Microcontroller Unit | |||
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General Description
Block Diagram
EPROM PROGRAMMING
VPP
CONTROL
PROGRAM REGISTER
EPROM/OTPROM â 7744 BYTES
(144 BYTES CONFIGURABLE)
OPTION
REGISTER
RAM â 176 BYTES
(304 BYTES MAXIMUM)
BOOT ROM â 240 BYTES
RESET
IRQ
CPU
CONTROL
ARITHMETIC
LOGIC UNIT
M68HC05 CPU
CPU REGISTERS
ACCUMULATOR
INDEX REGISTER
0 0 0 0 0 1 1 STACK POINTER
PROGRAM COUNTER
CONDITION CODE REGISTER 1 1 1 H I N Z C
SCI
OSC2
OSCILLATOR
÷2
OSC1
INTERNAL
PROCESSOR
CLOCK
SPI
COP WATCHDOG
AND
CLOCK MONITOR
BAUD RATE
GENERATOR
VDD
VSS
POWER
16-BIT
CAPTURE/COMPARE
TIMER SYSTEM
* Port B pins also function as external interrupts.
â PC7 has a high current sink and source capability.
Figure 1-2. MC68HC705C8A Block Diagram
MC68HC705C8A â Rev. 2.0
MOTOROLA
General Description
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0*
PB1*
PB2*
PB3*
PB4*
PB5*
PB6*
PB7*
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7â
PD7
RDI (PD0)
TDO (PD1)
MISO (PD2)
MOSI (PD3)
SCK (PD4)
SS (PD5)
TCMP
TCAP
Technical Data
23
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