MC68HC16Z1CFC16 Freescale Semiconductor, MC68HC16Z1CFC16 Datasheet - Page 470

• Manufacturer Part Number: MC68HC16Z1CFC16
• Description: IC MPU 1K RAM 16MHZ 132-PQFP
• Manufacturer: Freescale Semiconductor
• Series: HC16r

Specifications of MC68HC16Z1CFC16

• Core Processor: CPU16
• Core Size: 16-Bit
• Speed: 16MHz
• 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: 132-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

STRING_DONE:
SEND_CH:
LOOP5:
*****
STRING
SEC_STR DC
STRING2 DC
*****
BDM:
E.2.1.4 Example 4 - Software Watchdog, Periodic Interrupt, and Autovector Demo
*
*
*
*
*
*
*
*
*
*********************************************************************
E-18
The STRINGs
Interrupts/Exceptions
JSR
AIX
BRA
JSR
RTS
LDAA
ANDA
BEQ
LDAA
STD
LDAB
ANDB
BEQ
RTS
DC
BGND
Description : This program demonstrates the software watchdog,
INCLUDE
INCLUDE
INCLUDE
ORG
DC.W
ORG
DC.W
SEND_CH
#$01
SEND_STRING
DELAY
SCSR
#$01
SEND_CH
#$00
SCDR
SCSR+1
#$80
LOOP5
'The System Clock is now running at 16.777 MHz...',0a,0d,00
'check this out!',0a,0d,00,00
'The System Clock is now running at 4.194 MHz...',0a,0d,00
$002C
$0070
AUTOV
VECRT
INITIALIZATION AND PROGRAMMING EXAMPLES
*****
Freescale Semiconductor, Inc.
the periodic interrupt, and an autovector.
The periodic interrupt runs a clock which is updated
on the dummy terminal.
will force a reset unless IRQ6 is grounded.
is pulled low, an autovectored interrupt routine will
“feed” the watchdog with $55 and $AA, and the
clock will run without being reset on the dummy terminal.
For More Information On This Product,
'EQUATES.ASM'
'ORG00000.ASM'
'ORG00008.ASM'
Go to: www.freescale.com
*****
;again
;go send out the byte
;increment IX to point to the next byte
;loop back and do next byte in string
;wait for a moment
;go back to whence we came
;subroutine to send out one byte to SCI
;read SCI status reg to check/clear TDRE bit
;check only the TDRE flag bit
;if TDR is not empty, go back to check it
;clear A to send a full word to SCDR ($FFC0E)
;transmit one ASCII character to the screen
;test the TC bit (transfer complete)
;continue to wait until TC is set
;return to send_string subroutine
;exception vectors point here
;and put the user into background debug mode
;put address of autovector routine
;at the level 6 vector (IRQ6)
;put address of periodic interrupt routine
;at 1st user defined interrupt vector
;table of EQUates for common registers
;initialize reset vectors
;initialize interrupt vectors
Every eight seconds the COP
M68HC16 Z SERIES
USER’S MANUAL
When IRQ6