MC68HC16Z1CPV25 Freescale Semiconductor, MC68HC16Z1CPV25 Datasheet - Page 468

• 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

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TC_LOOP:
*****
BDM:
*****
STRING
E.2.1.3 Example 3 - Changing Clock Frequencies
*
*
*
*
*
*
*
*
*
*
*
***************************************************************************
*****
INIT:
COP
E-16
Exceptions/Interrupts
The string
Initialize
BEQ
CLRA
STD
LDAB
ANDB
BEQ
RTS
BGND
ORG
DC 'I LIKE MY NEW MEMORY!!!',0A,0D,00
Description : This program demonstrates the ability of the
INCLUDE
INCLUDE
INCLUDE
INCLUDE
INCLUDE
LDD
ORG
SEND_CH
SCDR
SCSR+1
#$80
TC_LOOP
$0310
#$000C
*****
*****
INITIALIZATION AND PROGRAMMING EXAMPLES
$0200
Freescale Semiconductor, Inc.
M68HC16 to change clock frequencies on the fly.
In this particular case, we alternate between
a frequency of 16.78MHz and 4.194MHz.
that because we are writing to the screen,
we also need to correct the BAUD rate (1200)
each time we change the frequency.
that your terminal has been set up to receive
at 1200 baud.
to the CLKOUT pin on the EVB to observe the
frequency change.
For More Information On This Product,
'EQUATES.ASM'
'ORG00000.ASM'
'ORG00008.ASM'
'INITSYS.ASM'
'INITRAM.ASM'
Go to: www.freescale.com
*****
;if TDR is not empty, go back to check it
;transmit one ASCII character to the screen
;test the TC bit (transfer complete)
;continue to wait until TC is set
;finish sending out one character
;exception vectors point here
;and put the user in background mode
An oscilloscope may be connected
;table of EQUates for common registers
;initialize reset vectors
;initialize interrupt vectors
;start program after the exception
;vector table
;initially set EK=F, XK=0, YK=0, ZK=0
;set sys clock at 16.78 MHz, disable
;turn on internal 1K SRAM at $10000
;set stack in bank 1 (SK=1, SP=03FE)
Make sure
Note
M68HC16 Z SERIES
USER’S MANUAL