MC68HC908GR8CDW Freescale Semiconductor, MC68HC908GR8CDW Datasheet - Page 275
MC68HC908GR8CDW
Manufacturer Part Number
MC68HC908GR8CDW
Description
IC MCU 8K FLASH 8MHZ 28-SOIC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908GR4CFAE.pdf
(408 pages)
Specifications of MC68HC908GR8CDW
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
17
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
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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19.3 SIM Bus Clock Control and Generation
19.3.1 Bus Timing
MC68HC908GR8 — Rev 4.0
MOTOROLA
OSCSTOPENB
CONFIG
FROM
OSC2
OSC1
PHASE-LOCKED LOOP (PLL)
CGMRCLK
OSCILLATOR (OSC)
The bus clock generator provides system clock signals for the CPU and
peripherals on the MCU. The system clocks are generated from an
incoming clock, CGMOUT, as shown in
come from either an external oscillator or from the on-chip PLL. See
Clock Generator Module
In user mode, the internal bus frequency is either the crystal oscillator
output (CGMXCLK) divided by four or the PLL output (CGMVCLK)
divided by four. See
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 19-3. CGM Clock Signals
System Integration Module (SIM)
Go to: www.freescale.com
CGMXCLK
CGMOUT
External Interrupt
(CGMC).
SIM COUNTER
TO TIMTB15A, ADC
2
(IRQ).
SIM Bus Clock Control and Generation
Figure
GENERATORS
SIM
BUS CLOCK
System Integration Module (SIM)
19-3. This clock can
Technical Data
SIMOSCEN
IT12
TO REST
OF CHIP
IT23
TO REST
OF CHIP
275
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