UPSD3422E-40U6 STMicroelectronics, UPSD3422E-40U6 Datasheet - Page 59

• Manufacturer Part Number: UPSD3422E-40U6
• Description: MCU 8BIT 8032 64KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3422E-40U6

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IrDA, SPI, UART/USART, USB
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 80KB (80K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• For Use With: 497-5577 - BOARD EVAL USB POWER SWITCH497-5518 - EVAL BOARD RFID READER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-4903

UPSD3422, UPSD3433, UPSD3434, UPSD3454
Note:
1
8051 assembly code example
LOOP:
The code loop where the data transfer takes place is only 3 lines of code.
MOV
MOV
MOV
MOV
MOV
MOV
MOVX
MOVX
DJNZ
MOV
MOV
(1)
(1)
(1)
R7, #COUNT
DPTR,
#SOURCE_ADDR
85h, #01h
DPTR, #DEST_ADDR ; load XDATA destination address base into DPTR1
85h, #40h
86h, #0Ah
A, @DPTR
@DPTR, A
R7, LOOP
86h, #00
85h, #00
; initialize size of data block to transfer
; load XDATA source address base into DPTR0
; load DPTC to access DPTR1 pointer
; load DPTC to access DPTR0 pointer and auto
toggle
; load DPTM to auto-increment both pointers
; load XDATA byte from source into ACC.
; after load completes, DPTR0 increments and
DPTR
; switches DPTR1
; store XDATA byte from ACC to destination.
; after store completes, DPTR1 increments and
DPTR
; switches to DPTR0
; continue until done
; disable auto-increment
; disable auto-toggle, now back to single DPTR
mode
Dual data pointers
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