MC68HC908AP8CB Freescale Semiconductor, MC68HC908AP8CB Datasheet - Page 72

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MC68HC908AP8CB

Manufacturer Part Number
MC68HC908AP8CB
Description
IC MCU 8K FLASH 8MHZ 42SDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

Specifications of MC68HC908AP8CB

Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SCI, SPI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
32
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
42-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Oscillator (OSC)
5.2.1 CGM Reference Clock Selection
The clock generator module (CGM) reference clock (CGMXCLK) is the reference clock input to the MCU.
It is selected by programming two bits in a FLASH memory location; the mask option register (MOR), at
$FFCF. See
72
3.5 Mask Option Register
Address:
OSCSEL1
OSCSEL0
Erased:
Reset:
Read:
MOR
Write:
OSCSEL1 OSCSEL0
X-TAL OSCILLATOR
$FFCF
Bit 7
R
1
OSC1
Figure 5-1. Oscillator Module Block Diagram
To CGM and others
Figure 5-2. Mask Option Register (MOR)
= Reserved
X
XCLK
6
1
MC68HC908AP Family Data Sheet, Rev. 4
MUX
OSC2
CGMXCLK
RC
(MOR).
R
5
1
I
To CGM PLL
RC OSCILLATOR
CGMRCLK
Unaffected by reset
R
4
1
RCCLK
R
3
1
BUS CLOCK
X
To TBM
INTERNAL OSCILLATOR
MUX
R
2
1
OSCCLK
RC
From SIM
ICLK
I
R
1
1
To SIM
(and COP)
OSCCLK1
OSCCLK0
CONFIG2
Freescale Semiconductor
Bit 0
R
1

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