MC68HC908AP8CB Freescale Semiconductor, MC68HC908AP8CB Datasheet - Page 73
MC68HC908AP8CB
Manufacturer Part Number
MC68HC908AP8CB
Description
IC MCU 8K FLASH 8MHZ 42SDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908AP8CFBE.pdf
(324 pages)
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
-
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5.2.2 TBM Reference Clock Selection
The timebase module reference clock (OSCCLK) is selected by configuring two bits in the CONFIG2
register, at $001D. See
Freescale Semiconductor
OSCSEL1
0
0
1
1
Address:
The internal oscillator is a free running oscillator and is available after each
POR or reset. It is turned-off in stop mode by setting the STOP_ICLKDIS
bit in CONFIG2.
The RCCLK or XCLK is only available if that clock is selected as the CGM
reference clock, whereas the ICLK is always available.
Reset:
Read:
Write:
OSCSEL0
OSCCLK1
0
1
0
1
ICLKDIS
Table 5-2. Timebase Module Reference Clock Selection
STOP_
$001D
0
0
1
1
Bit 7
Chapter 3 Configuration & Mask Option Registers (CONFIG &
0
Figure 5-3. Configuration Register 2 (CONFIG2)
RCLKEN
STOP_
Table 5-1. CGMXCLK Clock Selection
CGMXCLK
6
0
MC68HC908AP Family Data Sheet, Rev. 4
RCCLK
XCLK
ICLK
—
XCLKEN
STOP_
OSCCLK0
5
0
0
1
0
1
OSC2 Pin
output of
Inverting
OSCCLK1 OSCCLK0
NOTE
NOTE
X-TAL
f
f
BUS
BUS
—
4
0
3
0
Not used
Internal oscillator generates the CGMXCLK.
RC oscillator generates the CGMXCLK.
Internal oscillator is available after each POR or
reset.
X-tal oscillator generates the CGMXCLK.
Internal oscillator is available after each POR or
reset.
Timebase Clock Source
Internal oscillator (ICLK)
RC oscillator (RCCLK)
X-tal oscillator (XCLK)
2
0
0
Not used
Comments
1
0
0
SCIBD-
SRC
Bit 0
MOR).
0
Clock Selection
73
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