MC908SR12CBE Freescale Semiconductor, MC908SR12CBE Datasheet - Page 79
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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5.6 Mask Option Register (MOR)
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor Configuration and Mask Option Registers (CONFIG & MOR)
Address:
SCIBDSRC — SCI Baud Rate Clock Source
The mask option register (MOR) is used for selecting one of the three
clock options for the MCU. The MOR is a byte located in FLASH
memory, and is written to by a FLASH programming routine.
OSCSEL1, OSCSEL0 — Oscillator Selection Bits
Bits 5–0 — Should be left as 1’s.
Erased:
Reset:
Read:
Write:
SCIBDSRC selects the clock source used for the SCI. The setting of
this bit affects the frequency at which the SCI operates.
OSCSEL1 and OSCSEL0 select which oscillator is used for the MCU
CGMXCLK clock. The erase state of these two bits is logic 1. These
bits are unaffected by reset. (See
1 = Internal data bus clock, f
0 = Oscillator clock, CGMXCLK, is used as clock source for SCI
OSCSEL1 OSCSEL0
$FF80
Bit 7
U
R
1
Figure 5-4. Mask Option Register (MOR)
= Reserved
U
6
1
Configuration and Mask Option Registers (CONFIG & MOR)
R
U
5
1
BUS
R
U
4
1
Table
, is used as clock source for SCI
R
U
3
1
5-1).
Mask Option Register (MOR)
R
U
2
1
R
U
1
1
Data Sheet
Bit 0
R
U
1
79
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