MAX192AEWP/GG8 Maxim Integrated, MAX192AEWP/GG8 Datasheet - Page 21

• Manufacturer Part Number: MAX192AEWP/GG8
• Description: Analog to Digital Converters - ADC
• Manufacturer: Maxim Integrated

Specifications of MAX192AEWP/GG8

• Number Of Channels: 8
• Architecture: SAR
• Conversion Rate: 133 KSPs
• Resolution: 10 bit
• Input Type: Single-Ended/Differential
• Interface Type: 4-Wire (SPI, Microwire, QSPI, TMS320)
• Operating Supply Voltage: 4.75 V to 5.25 V
• Maximum Power Dissipation: 640 mW
• Number Of Converters: 1
• Voltage Reference: 4.096 V

Figure 20. MAX192 Assembly-Code Listing
* Description :
*
*
*
*
* Roger J.A. Chen, Applications Engineer
* MAXIM Integrated Products
* November 20, 1992
*
******************************************************************************************************************************************************
MAIN:
MAINLOOP:
WAIT:
ENDPROGRAM:
INITQSPI:
;This routine sets up the QSPI microsequencer to operate on its own.
;The sequencer will read all eight channels of a MAX192 each time
;it is triggered. The A/D converter results will be left in the
;receive data RAM. Each 16 bit receive data RAM location will
;have a leading zero, 10 + 2 bits of conversion result and three zeros.
;
;Receive RAM Bits 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
;A/D Result
***** Initialize the QSPI Registers ******
INCLUDE
INCLUDE
INCLUDE
ORG
INCLUDE ‘INITSYS.ASM’
INCLUDE ‘INITRAM.ASM’
JSR
JSR
LDAA
ANDA
BEQ
BRA MAINLOOP
PSHA
PSHB
LDAA
STAA
LDAA
STAA
LDAA
STAA
LDD
STD
LDD
STD
This is a shell program for using a stand-alone 68HC16 without any external memory. The internal 1K RAM
is put into bank $0F to maintain 68HC11 code compatibility. This program was written with software
provided in the Motorola 68HC16 Evaluation Kit.
INITQSPI
READ192
SPCR0
SPCR1
#$8008
#$0000
WAIT
$0200
QPDR
QPAR
QDDR
SPSR
#%01111000
#%01111011
#%01111110
#$80
‘EQUATES.ASM’ ;Equates for common reg addrs
‘ORG00000.ASM’ ;initialize reset vector
‘ORG00008.ASM’ ;initialize interrupt vectors
0 MSB
______________________________________________________________________________________
;idle state for PCS0-3 = high
;assign port D to be QSPI
;only MISO is an input
;master mode,16 bits/transfer,
;CPOL=CPHA=0,1MHz Ser Clock
;set delay between PCS0 and SCK,
;set delay between transfers
;turn on internal SRAM at $10000
;start program after interrupt vectors
;set EK=F,XK=0,YK=0,ZK=0
;set sys clock at 16.78 MHz, COP off
;set stack (SK=1, SP=03FE)
;wait for QSPI to finish
LSB 0 0 0
Low-Power, 8-Channel,
Serial 10-Bit ADC
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