MC68HC16Z1CPV25 Freescale Semiconductor, MC68HC16Z1CPV25 Datasheet - Page 388

• Manufacturer Part Number: MC68HC16Z1CPV25
• Description: IC MPU 1K RAM 25MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC16r

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

PITR — Periodic Interrupt Timer Register
PIV[7:0] — Periodic Interrupt Vector
D.2.14 Periodic Interrupt Timer Register
PTP — Periodic Timer Prescaler
PITM[7:0] — Periodic Interrupt Timing Modulus
D-14
15
0
0
RESET:
This field specifies the periodic interrupt vector number supplied by the SIM when the
CPU16 acknowledges an interrupt request.
Contains the count value for the periodic timer. This register can be read or written at
any time.
This field determines the periodic interrupt rate. Use the following equations to calcu-
late timer period.
The following equation calculates the PIT period when a slow reference frequency is
used:
The following equation calculates the PIT period when a fast reference frequency is
used:
The following equation calculates the PIT period for an externally input clock frequen-
cy on both slow and fast reference frequency devices.
0 = Periodic timer clock not prescaled.
1 = Periodic timer clock prescaled by a value of 512.
14
0
0
13
0
0
PIT Period
PIT Period
PIT Period
12
0
0
Freescale Semiconductor, Inc.
11
0
0
For More Information On This Product,
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10
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0
0
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128 PITM[7:0] 1 if PTP = 0, 512 if PTP = 1 4
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Go to: www.freescale.com
PITM[7:0] 1 if PTP = 0, 512 if PTP = 1 4
PITM[7:0] 1 if PTP = 0, 512 if PTP = 1 4
REGISTER SUMMARY
9
0
0
MODCLK
PTP
8
7
0
f
6
0
f
f
sys
ref
ref
5
0
4
0
PITM[7:0]
3
0
M68HC16 Z SERIES
USER’S MANUAL
2
0
$YFFA24
1
0
0
0