MC908SR12MFAER Freescale Semiconductor, MC908SR12MFAER Datasheet - Page 116
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MC908SR12MFAER
Manufacturer Part Number
MC908SR12MFAER
Description
IC MCU 12K FLASH 4/8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908SR12MFAE.pdf
(404 pages)
Specifications of MC908SR12MFAER
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SCI
Peripherals
LVD, POR, PWM, Temp Sensor
Number Of I /o
31
Program Memory Size
12KB (12K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
MC908SR12MFAER
MC908SR12MFAERTR
MC908SR12MFAERTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908SR12MFAER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Clock Generator Module (CGM)
8.4.1 Oscillator Module
8.4.2 Phase-Locked Loop Circuit (PLL)
8.4.3 PLL Circuits
Data Sheet
116
The oscillator module provides two clock outputs CGMXCLK and
CGMRCLK to the CGM module. CGMXCLK when selected, is driven to
SIM module to generate the system bus clock. CGMRCLK is used by the
phase-lock-loop to provide a higher frequency system bus clock and the
reference clock for the PWM and analog modules. The oscillator module
also provides the reference clock for the timebase module (TBM). See
Section 7. Oscillator (OSC)
See
TBM. See
description on PWM module.
The PLL is a frequency generator that can operate in either acquisition
mode or tracking mode, depending on the accuracy of the output
frequency. The PLL can change between acquisition and tracking
modes either automatically or manually.
The PLL consists of these circuits:
•
•
•
•
•
•
•
Section 12. Timebase Module (TBM)
Voltage-controlled oscillator (VCO)
Reference divider
Frequency pre-scaler
Modulo VCO frequency divider
Phase detector
Loop filter
Lock detector
Clock Generator Module (CGM)
Section 13. Pulse Width Modulator (PWM)
for detailed oscillator circuit description.
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
for detailed description on
Freescale Semiconductor
for detailed
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