mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 395

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

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OPIN1/ATD0
OPIN2/ATD1
CONTROL AND STATUS REGISTERS — 96 BYTES
CGMXFC
** IRQ2
REGISTERS
* IRQ1
V
OSC1
OSC2
* RST
V
V
V
V
SSAM
REFH
REFL
V
V
USER ROM VECTORS — 38 BYTES
DDA
SSA
CPU
DD
SS
MONITOR ROM — 368 BYTES
USER ROM — 12,288 BYTES
USER RAM — 512 BYTES
CLOCK GENERATOR MODULE
M68HC08 CPU
10-BIT ANALOG-TO-DIGITAL
INTERNAL OSCILLATOR
SYSTEM INTEGRATION
PHASE-LOCKED LOOP
CONVERTER MODULE
OSCILLATORS AND
X-TAL OSCILLATOR
RC OSCILLATOR
EXTERNAL IRQ
ARITHMETIC/LOGIC
MODULE
MODULE
MODULE
ANALOG
POWER
UNIT (ALU)
Figure A-1. MC68HC08SR12 Block Diagram
* Pin contains integrated pullup device.
** Pin contains configurable pullup device.
*** Pin contains integrated pullup device for KBI functions.
† Pin is open-drain when configured as output.
‡ High current drive pin (for LED).
# Pin not bonded on 42-pin SDIP.
2-CHANNEL TIMER INTERFACE
2-CHANNEL TIMER INTERFACE
MULTI-MASTER IIC (SMBUS)
PULSE WIDTH MODULATOR
SERIAL COMMUNICATIONS
COMPUTER OPERATING
Shaded blocks indicate differences to MC68HC908SR12
INTERFACE MODULE
INTERFACE MODULE
INTERRUPT MODULE
PROPERLY MODULE
POWER-ON RESET
8-BIT KEYBOARD
INHIBIT MODULE
LOW-VOLTAGE
INTERNAL BUS
MODULE 1
MODULE 2
TIMEBASE
MODULE
MODULE
MODULE
PTA5/ATD7 – PTA0/ATD2
PTD7/KBI7 – PTD0/KBI0 ***
PTA7/T1CH1
PTA6/T1CH0
PTB6/IRQ2
PTB5/T2CH1
PTB4/T2CH0
PTB3//SCL1/RxD
PTB2/SDA1/TxD
PTB1/SCL0
PTB0/SDA0
PTC7/ATD12
PTC6/ATD11
PTC5/ATD10
PTC4/ATD9
PTC3/ATD8
PTC2/PWM2
PTC1/PWM1
PTC0/PWM0/CD
†
†
‡
‡
‡ #
‡ #
‡
†
†
‡