MC68HC16Z1CPV25 Freescale Semiconductor, MC68HC16Z1CPV25 Datasheet - Page 133
MC68HC16Z1CPV25
Manufacturer Part Number
MC68HC16Z1CPV25
Description
IC MPU 1K RAM 25MHZ 144-LQFP
Manufacturer
Freescale Semiconductor
Series
HC16r
Datasheet
1.MC68HC16Z1VEH16.pdf
(500 pages)
Specifications of MC68HC16Z1CPV25
Core Processor
CPU16
Core Size
16-Bit
Speed
25MHz
Connectivity
EBI/EMI, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
16
Program Memory Type
ROMless
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
144-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Other names
Q1141110
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5.4.6 Periodic Interrupt Timer
M68HC16 Z SERIES
USER’S MANUAL
EXTAL
OSCILLATOR
Figure 5-9
riodic interrupt timer.
The periodic interrupt timer (PIT) allows the generation of interrupts of specific priority
at predetermined intervals. This capability is often used to schedule control system
tasks that must be performed within time constraints. The timer consists of a prescaler,
a modulus counter, and registers that determine interrupt timing, priority and vector as-
signment. Refer to
processing.
CRYSTAL
NOTES:
1. 128 IS PRESENT ONLY ON DEVICES WITH A FAST REFERENCE OSCILLATOR.
XTAL
Figure 5-9 Periodic Interrupt Timer and Software Watchdog Timer
is a block diagram of the watchdog timer and the clock control for the pe-
128
WATCHDOG
SOFTWARE
1
LPSTOP
RESET
Table 5-10 Software Watchdog Divide Ratio
SWT1
SWT0
SWE
FREEZE
4.13 Exceptions
Freescale Semiconductor, Inc.
CLOCK SELECT
AND DISABLE
For More Information On This Product,
SWP
SYSTEM INTEGRATION MODULE
0
0
0
0
1
1
1
1
MODCLK
SOFTWARE WATCHDOG TIMER
(2
Go to: www.freescale.com
15
DIVIDER CHAIN — 4 TAPS)
SWT[1:0]
for further information about interrupt exception
00
01
10
11
00
01
10
11
2
9
PRESCALER
SWSR
Divide Ratio
2
2
2
2
2
2
2
2
11
13
15
18
20
22
24
9
PERIODIC INTERRUPT TIMER
(8-BIT MODULUS COUNTER)
PICR
SELECT
CLOCK
4
PITR
SWP
PTP
PIT WATCHDOG BLOCK 16
INTERRUPT
PIT
5-27
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