MC908GR60AMFAE Freescale Semiconductor, MC908GR60AMFAE Datasheet - Page 76
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MC908GR60AMFAE
Manufacturer Part Number
MC908GR60AMFAE
Description
IC MCU 8BIT 60K FLASH 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908GR32ACFJE.pdf
(314 pages)
Specifications of MC908GR60AMFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 24x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908GR60AMFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Clock Generator Module (CGM)
76
10. Verify the choice of N, E, and L by comparing f
4. Select a VCO frequency multiplier, N.
5. Calculate and verify the adequacy of the VCO and bus frequencies f
6. Select the VCO’s power-of-two range multiplier E, according to
7. Select a VCO linear range multiplier, L, where f
8. Calculate and verify the adequacy of the VCO programmed center-of-range frequency, f
9. For proper operation,
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. After choosing N, the actual bus frequency can be determined using equation in 2
above.
center-of-range frequency is the midpoint between the minimum and maximum frequencies
attainable by the PLL.
f
to f
VCLK
VCLK
must be within the application’s tolerance of f
.
Exceeding the recommended maximum bus frequency or VCO frequency
can crash the MCU.
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
1. Do not program E to a value of 3.
Table 4-2. Power-of-Two Range Selectors
16 MHz< f
8 MHz< f
Frequency Range
0 < f
N
L = Round
f
VRS
VCLK
=
f
VCLK
f
VCLK
f
VCLK
VRS
BUS
round
–
≤ 8 MHz
f
≤ 16 MHz
VCLK
= (L x 2
≤ 32 MHz
=
=
NOTE
⎛
⎜
⎝
( ) f
(
f
------------------------- -
N
f
VCLKDES
VCLK
≤
f
2
VCLK
RCLK
NOM
E
×
E
f
-------------------------- -
f
NOM
) f
VCLK
x f
VCLKDES
RCLK
) 4 ⁄
NOM
= 71.4 kHz
to f
NOM
2
×
⎞
⎟
⎠
VRS
2
E
, and f
and f
Table
VRS
VCLKDES
2
E
0
1
(1)
Chapter 20 Electrical
VCLK
RCLK
must be as close as possible
4-2.
. For proper operation,
to a value determined
and f
Freescale Semiconductor
BUS
.
VRS
. The
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