MC68340AG25E Freescale Semiconductor, MC68340AG25E Datasheet - Page 105
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MC68340AG25E
Manufacturer Part Number
MC68340AG25E
Description
IC MPU 32BIT 25MHZ 144-LQFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68340FE25E.pdf
(441 pages)
Specifications of MC68340AG25E
Processor Type
M683xx 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
144-LQFP
Controller Family/series
68K
Core Size
32 Bit
No. Of I/o's
16
Cpu Speed
25MHz
No. Of Timers
2
Embedded Interface Type
UART
Digital Ic Case Style
LQFP
Rohs Compliant
Yes
Processor Series
M683xx
Core
CPU32
Maximum Clock Frequency
25 MHz
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68340AG25E
Manufacturer:
Freescale Semiconductor
Quantity:
135
Company:
Part Number:
MC68340AG25E
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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4.2.2.6.1 Periodic Timer Period Calculation. The period of the periodic timer can be
calculated using the following equation:
Solving the equation using a crystal frequency of 32.768-kHz with the prescaler disabled
gives:
This gives a range from 122 s, with a PITR value of $01 (00000001 binary), to 31.128
ms, with a PITR value of $FF (11111111 binary).
Solving the equation with the prescaler enabled (PTP=1 in the PITR) gives the following
values:
This gives a range from 62.5 ms, with a PITR value of $01, to 15.94 s, with a PITR value
of $FF.
For fast calculation of periodic timer period using a 32.768-kHz crystal, the following
equations can be used:
With prescaler disabled:
With prescaler enabled:
4-8
programmable interrupt timer period
programmable interrupt timer period
periodic interrupt timer period
periodic interrupt timer period
periodic interrupt timer period
periodic interrupt timer period
periodic interrupt timer period
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68340 USER’S MANUAL
Go to: www.freescale.com
=
=
=
=
=
=
=
PITR (122 s)
PITR (62.5 ms)
EXTAL frequency/prescaler value
PITR count value
PITR count value
PITR count value
PITR count value
PITR count value
32768/512
32768/1
8192
2 2
16
2 2
2 2
MOTOROLA
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