MCHC908GR8CFAE Freescale Semiconductor, MCHC908GR8CFAE Datasheet - Page 77
MCHC908GR8CFAE
Manufacturer Part Number
MCHC908GR8CFAE
Description
IC MCU FLSH 8BIT8MHZ 7.5K32-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Specifications of MCHC908GR8CFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
21
Program Memory Size
7.5KB (7.5K x 8)
Program Memory Type
FLASH
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 6x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
Controller Family/series
HC08
No. Of I/o's
21
Ram Memory Size
384Byte
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
I2C, SCI, SPI
Rohs Compliant
Yes
Processor Series
HC08G
Core
HC08
Data Bus Width
8 bit
Data Ram Size
384 B
Interface Type
SCI, SPI
Maximum Clock Frequency
8.2 MHz
Number Of Programmable I/os
21
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908GZ60E, M68CBL05CE, M68EML08GPGTE
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit, 6 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
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Manufacturer
Quantity
Price
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Part Number:
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Manufacturer:
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Quantity:
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Chapter 7
Internal Clock Generator (ICG) Module)
7.1 Introduction
The internal clock generator module (ICG) is used to create a stable clock source for the microcontroller
without using any external components. The ICG generates the oscillator output clock (CGMXCLK),
which is used by the low-voltage inhibit (LVI) and other modules. The ICG also generates the clock
generator output (CGMOUT), which is fed to the system integration module (SIM) to create the bus
clocks. The bus frequency will be one-fourth the frequency of CGMXCLK and one-half the frequency of
CGMOUT. Finally, the ICG generates the timebase clock (TBMCLK), which is used in the timebase
module (TBM) and the computer operating properly (COP) clock (COPCLK) which is used by the COP
module.
7.2 Features
The ICG has these features:
7.3 Functional Description
The ICG, shown in
Freescale Semiconductor
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Selectable external clock generator, either 1-pin external source or 2-pin crystal, multiplexed with
port pins
Internal clock generator with programmable frequency output in integer multiples of a nominal
frequency (307.2 kHz ± 25 percent)
Frequency adjust (trim) register to improve variability to ±4 percent
Bus clock software selectable from either internal or external clock (bus frequency range from
76.8 kHz ± 25 percent to 9.75 MHz ± 25 percent in 76.8-kHz increments
Timebase clock automatically selected from external if external clock is available
Clock monitor for both internal and external clocks
Clock enable circuit
Internal clock generator
External clock generator
Clock monitor circuit
Clock selection circuit
Do not exceed the maximum bus frequency of 8 MHz at 5.0 V and 4 MHz
at 3.0 V.
Figure
MC68HC908GT16 • MC68HC908GT8 • MC68HC08GT16 Data Sheet, Rev. 5.0
7-2, contains these major submodules:
NOTE
77
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