MC68HC908LJ24CPK Freescale Semiconductor, MC68HC908LJ24CPK Datasheet - Page 119
MC68HC908LJ24CPK
Manufacturer Part Number
MC68HC908LJ24CPK
Description
IC MCU 24K FLASH 8MHZ SPI 80LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908LK24CFUE.pdf
(464 pages)
Specifications of MC68HC908LJ24CPK
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SPI
Peripherals
LCD, LVD, POR, PWM
Number Of I /o
48
Program Memory Size
24KB (24K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908LJ24CPK
Manufacturer:
Freescale Semiconductor
Quantity:
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Part Number:
MC68HC908LJ24CPK
Manufacturer:
FRE/MOT
Quantity:
20 000
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MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
4. Calculate N:
5. Calculate and verify the adequacy of the VCO and bus
The relationship between the VCO frequency, f
reference frequency, f
where N is the integer range multiplier, between 1 and 4095.
In cases where desired bus frequency has some tolerance,
choose f
requirements (such as modules which are clocked by CGMXCLK),
cost requirements, or ideally, as high as the specified range
allows. See
reference divider, R = 1.
When the tolerance on the bus frequency is tight, choose f
an integer divisor of f
requirement, use the following equation to solve for R with
practical choices of f
lowest R.
frequencies f
Clock Generator Module (CGM)
R
=
RCLK
round R
Section 24. Electrical
VCLK
to a value determined either by other module
N
MAX
and f
=
RCLK
BUSDES
×
round
f
f
RCLK
VCLK
VCLK
f
BUS
BUS
f
------------------------- -
VCLKDES
, and choose the f
f
RCLK
, is
.
R
------------------------------------ -
=
=
=
, and R = 1. If f
f
×
RCLK
2
----------- f
2
----------- f
---------- -
2
f
f
VCLK
P
P
R
R
P
VCLKDES
N
N
×
(
(
–
×
4
RCLK
RCLK
Specifications. Choose the
integer
2
P
Clock Generator Module (CGM)
)
)
RCLK
f
------------------------- -
RCLK
VCLKDES
f
RCLK
Functional Description
VCLK
cannot meet this
that gives the
, and the
Data Sheet
RCLK
119
to
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