MCHC908GR8AVFAE Freescale Semiconductor, MCHC908GR8AVFAE Datasheet - Page 60
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MCHC908GR8AVFAE
Manufacturer Part Number
MCHC908GR8AVFAE
Description
IC MCU 8K FLASH 8MHZ 32-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MCHC908GR8ACFAE.pdf
(260 pages)
Specifications of MCHC908GR8AVFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
21
Program Memory Size
7.5KB (7.5K x 8)
Program Memory Type
FLASH
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 6x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCHC908GR8AVFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Clock Generator Module (CGM)
60
4. Select a VCO frequency multiplier, N.
5. If N is < N
6. Calculate and verify the adequacy of the VCO and bus frequencies f
7. Select the VCO’s power-of-two range multiplier E, according to this table:
8. Select a VCO linear range multiplier, L, where f
9. Calculate and verify the adequacy of the VCO programmed center-of-range frequency, f
Then recalculate N:
center-of-range frequency is the midpoint between the minimum and maximum frequencies
attainable by the PLL.
For proper operation,
max
, use P = 0. If N > N
NOTE: Do not program E to a value of 3.
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
16MHz ≤ f
8MHz ≤ f
N max
N max
Frequency Range
0 < f
N
N max
f
N
L
VCLK
max
=
Current N Value
f
VCLK
VRS
=
0
=
×
×
f
VCLK
round
VRS
VCLK
<
f
, choose P using this table:
<
2
4
round
round
BUS
N
<
<
N
–
< 8MHz
=
≤
N
N
< 16MHz
≤
f
< 32MHz
=
(
VCLK
N max
2
⎛
⎜
⎝
N max 2
≤
≤
=
R
------------------------------------ -
P
⎛
⎜
⎝
(
⎛
⎜
⎝
N max 4
N max 8
L
--------------------------
2
R
------------------------------------ -
(
×
×
f
E
f
×
VCLK
N R
f
×
RCLK
f
f
VCLK
≤
×
VCLKDES
RCLK
2
×
NOM
f
⁄
VCLKDES
f
E
f
--------------------------
×
×
NOM
NOM
)f
) f
) 4 ⁄
×
NOM
×
= 38.4 kHz
2
2
RCLK
⎞
⎟
⎠
×
P
2
⎞
⎟
⎠
E
⎞
⎟
⎠
P
0
1
2
3
E
0
1
2
VCLK
and f
Freescale Semiconductor
BUS
.
VRS
. The
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