MC68HC705C8ACP Freescale Semiconductor, MC68HC705C8ACP Datasheet - Page 15

• Manufacturer Part Number: MC68HC705C8ACP
• Description: IC MCU 4MHZ 8K OTP 40-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705C8ACP

• 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: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

MC68HC705C8A — Rev. 3
MOTOROLA
Technical Data — MC68HC705C8A
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Freescale Semiconductor, Inc.
For More Information On This Product,
Option Register (Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
MC68HC705C8A Block Diagram . . . . . . . . . . . . . . . . . . . . . 25
40-Pin PDIP/Cerdip Pin Assignments . . . . . . . . . . . . . . . . . 26
44-Lead PLCC/CLCC Pin Assignments . . . . . . . . . . . . . . . . 27
44-Pin QFP Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . .27
42-Pin SDIP Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . 28
Bypassing Layout Recommendation . . . . . . . . . . . . . . . . . . 29
Crystal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2-Pin Ceramic Resonator Connections . . . . . . . . . . . . . . . . 31
3-Pin Ceramic Resonator Connections . . . . . . . . . . . . . . . . 31
External Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
I/O Register Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Programming Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 044
Accumulator (A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 045
Index Register (X) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 045
Stack Pointer (SP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 046
Program Counter (PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . .046
Condition Code Register (CCR) . . . . . . . . . . . . . . . . . . . . . 047
External Interrupt Internal Function Diagram . . . . . . . . . . . . 52
External Interrupt Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Port B I/O Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Interrupt Stacking Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Reset and Interrupt Processing Flowchart . . . . . . . . . . . . . . 59
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