MC908SR12CBE Freescale Semiconductor, MC908SR12CBE Datasheet - Page 102
MC908SR12CBE
Manufacturer Part Number
MC908SR12CBE
Description
IC MCU 12K FLASH 8MHZ 42-SDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908SR12MFAE.pdf
(404 pages)
Specifications of MC908SR12CBE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SCI
Peripherals
LVD, POR, PWM, Temp Sensor
Number Of I /o
29
Program Memory Size
12KB (12K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
42-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Oscillator (OSC)
7.2 Introduction
Data Sheet
102
The oscillator module provides the reference clock for the clock
generator module (CGM), the timebase module (TBM), and other MCU
sub-systems.
The oscillator module consist of three types of oscillator circuits:
The reference clock for the CGM and other MCU sub-systems is
selected by:
The reference clock for the timebase module (TBM) is selected by the
two bits, OSCCLK1 and OSCCLK0, in the CONFIG2 register.
The internal oscillator runs continuously after a POR or reset, and is
always available. The RC and crystal oscillator cannot run concurrently;
one is disabled while the other is selected; because the RC and x-tal
circuits share the same OSC1 pin.
Figure
•
•
•
•
•
Internal oscillator
RC oscillator
Crystal (x-tal) oscillator
MC68HC908SR12 — FLASH device — oscillator selected by
programming the mask option register located at $FF80.
MC68HC08SR12 — ROM device — oscillator selected by ROM-
mask layer at factory.
7-1. shows the block diagram of the oscillator module.
Oscillator (OSC)
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
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