MC68HC711P2CFN4 Freescale Semiconductor, MC68HC711P2CFN4 Datasheet - Page 185

• Manufacturer Part Number: MC68HC711P2CFN4
• Description: IC MCU 32K OTP 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711P2CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: MI Bus, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 640 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Technical Data — MC68HC11P2
10.1 Contents
10.2 Introduction
10.3 Resets
MC68HC11P2 — Rev 1.0
10.2
10.3
10.4
10.5
10.6
10.7
Resets and interrupt operations load the program counter with a vector
that points to a new location from which instructions are to be fetched. A
reset immediately stops execution of the current instruction and forces
the program counter to a known starting address. Internal registers and
control bits are initialized so that the MCU can resume executing
instructions. An interrupt temporarily suspends normal program
execution whilst an interrupt service routine is being executed. After an
interrupt has been serviced, the main program resumes as if there had
been no interruption.
There are four possible sources of reset. Power-on reset (POR) and
external reset share the normal reset vector. The computer operating
properly (COP) reset and the clock monitor reset each has its own
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For More Information On This Product,
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Effects of reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Reset and interrupt priority . . . . . . . . . . . . . . . . . . . . . . . . . 195
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Low power operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
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Resets and Interrupts
Section 10. Resets and Interrupts
Technical Data