MC68HC908GZ8VFA Freescale Semiconductor, MC68HC908GZ8VFA Datasheet - Page 169
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MC68HC908GZ8VFA
Manufacturer Part Number
MC68HC908GZ8VFA
Description
IC MCU 8K FLASH 8MHZ CAN 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68908GZ8CFJER.pdf
(314 pages)
Specifications of MC68HC908GZ8VFA
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
CAN, LIN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908GZ8VFA
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 14
Resets and Interrupts
14.1 Introduction
Resets and interrupts are responses to exceptional events during program execution. A reset re-initializes
the microcontroller (MCU) to its startup condition. An interrupt vectors the program counter to a service
routine.
14.2 Resets
A reset immediately returns the MCU to a known startup condition and begins program execution from a
user-defined memory location.
14.2.1 Effects
A reset:
14.2.2 External Reset
A logic 0 applied to the RST pin for a time, t
PIN bit in the system integration module (SIM) reset status register.
14.2.3 Internal Reset
Sources:
All internal reset sources pull the RST pin low for 32 CGMXCLK cycles to allow resetting of external
devices. The MCU is held in reset for an additional 32 CGMXCLK cycles after releasing the RST pin.
Freescale Semiconductor
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Immediately stops the operation of the instruction being executed
Initializes certain control and status bits
Loads the program counter with a user-defined reset vector address from locations $FFFE and
$FFFF
Selects CGMXCLK divided by four as the bus clock
Power-on reset (POR)
Computer operating properly (COP)
Low-power reset circuits
Illegal opcode
Illegal address
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
RL
, generates an external reset. An external reset sets the
169
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