MC68HC705C8ACFN Freescale Semiconductor, MC68HC705C8ACFN Datasheet - Page 70

• Manufacturer Part Number: MC68HC705C8ACFN
• Description: IC MCU 4MHZ 8K OTP 44-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705C8ACFN

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 304 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

Low-Power Modes
Technical Data
70
NO
INTERRUPT
EXTERNAL
(IRQ)
YES
NO
2. SERVICE INTERRUPT:
1. FETCH RESET VECTOR
Figure 6-1. Stop/Wait Mode Function Flowchart
TURN ON OSCILLATOR
a. STACK
b. SET I BIT
c. VECTOR TO
DELAY TO STABILIZE
During stop mode, the I bit in the condition code register (CCR) is
cleared to enable external interrupts. All other registers and memory
remain unaltered. All input/output (I/O) lines remain unchanged. The
processor can be brought out of stop mode only by an external interrupt
or reset.
STOP OSCILLATOR
AND ALL CLOCKS
INTERRUPT ROUTINE
WAIT FOR TIME
CLEAR I BIT
Freescale Semiconductor, Inc.
RESET
STOP
For More Information On This Product,
OR
YES
Go to: www.freescale.com
Low-Power Modes
1. FETCH RESET VECTOR
2. SERVICE INTERRUPT:
CPU CLOCKS STOPPED
RESTART CPU CLOCK
a. STACK
b. SET I BIT
c. VECTOR TO
OSCILLATOR ACTIVE
TIMER, SCI, AND SPI
CLOCKS ACTIVE
INTERRUPT ROUTINE
CLEAR I BIT
RESET
WAIT
OR
YES
INTERRUPT
NO
EXTERNAL
(IRQ)
YES
YES
YES
YES
MC68HC705C8A — Rev. 3
INTERNAL TIMER
INTERNAL SCI
INTERNAL SPI
INTERRUPT
INTERRUPT
INTERRUPT
NO
NO
NO
MOTOROLA
NO