MC908AP16CFAE Freescale Semiconductor, MC908AP16CFAE Datasheet - Page 84
![IC MCU 16K FLASH 8MHZ 48-LQFP](/photos/19/7/190723/4134800_sml.jpg)
MC908AP16CFAE
Manufacturer Part Number
MC908AP16CFAE
Description
IC MCU 16K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheets
1.MC908AP8CFBE.pdf
(324 pages)
2.MC908AP16ACFBER.pdf
(316 pages)
3.MC908AP16CFAE.pdf
(322 pages)
Specifications of MC908AP16CFAE
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
16KB (16K 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
48-LQFP
Controller Family/series
HC08
No. Of I/o's
32
Ram Memory Size
1KB
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
I2C, SCI, SPI
Rohs Compliant
Yes
Processor Series
HC08AP
Core
HC08
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
SCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
32
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908AP64E, M68CBL05CE
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908AP16CFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC908AP16CFAE
Manufacturer:
FREESCALE
Quantity:
20 000
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Clock Generator Module (CGM)
84
1. Choose the desired bus frequency, f
2. Choose a practical PLL reference frequency, f
3. Calculate N:
4. Calculate and verify the adequacy of the VCO and bus frequencies f
solve for the other.
The relationship between f
where P is the power of two multiplier, and can be 0, 1, 2, or 3
the reference is 4MHz and
R = 1.
Frequency errors to the PLL are corrected at a rate of f
this rate must be as fast as possible. The VCO frequency must be an integer multiple of this rate.
The relationship between the VCO frequency, f
where N is the integer range multiplier, between 1 and 4095.
In cases where desired bus frequency has some tolerance, choose f
either by other module requirements (such as modules which are clocked by CGMXCLK), cost
requirements, or ideally, as high as the specified range allows. See
Specifications.
Choose the reference divider, R = 1.
When the tolerance on the bus frequency is tight, choose f
and R = 1. If f
practical choices of f
RCLK
R
cannot meet this requirement, use the following equation to solve for R with
RCLK
=
round R
, and choose the f
f
MC68HC908AP A-Family Data Sheet, Rev. 3
BUS
VCLK
and f
N
MAX
=
=
2
P
×
VCLK
round
BUSDES
f
f
×
⎧
⎨
⎩
VCLK
VCLK
f
⎛
⎜
⎝
BUS
f
f
------------------------- -
CGMPCLK
VCLKDES
is governed by the equation:
f
⎛
⎜
⎝
RCLK
R f
------------------------------------ -
=
=
=
RCLK
, or the desired VCO frequency, f
f
×
RCLK
2
----------- f
2
----------- f
---------- -
2
f
RCLK
VCLK
P
P
R
R
P
VCLKDES
VCLK
N
N
×
that gives the lowest R.
⎞
⎟
⎠
=
(
(
×
4
–
, and the reference clock divider, R. Typically,
2
RCLK
RCLK
integer
2
, and the reference frequency, f
P
P
RCLK
×
⎞
⎟
⎠
4
)
)
×
/R. For stability and lock time reduction,
RCLK
⎛
⎜
⎝
f
f
------------------------- -
BUS
VCLKDES
f
RCLK
to an integer divisor of f
Chapter 22 Electrical
VCLK
RCLK
⎞
⎟
⎠
⎫
⎬
⎭
and f
to a value determined
Freescale Semiconductor
VCLKDES
BUS
.
RCLK
; and then
BUSDES
, is
,
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