W78E052DDG Nuvoton Technology Corporation of America, W78E052DDG Datasheet - Page 84

• Manufacturer Part Number: W78E052DDG
• Description: IC MCU 8-BIT 8K FLASH 40-DIP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E052DDG

• Core Processor: 8052
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 36
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

;*****************************************************************************
; * read device ID low
;************************************************************************
Read_Device_ID_LOW:
;************************************************************************
;* Flash standby mode
;************************************************************************
Standby:
;************************************************************************
;* Erase APROM
;************************************************************************
Erase_APROM:
mov
clr
clr
mov
ret
mov
mov
mov
mov
mov
setb
mov
clr
clr
mov
ret
mov
mov
mov
mov
setb
mov
clr
clr
ret
mov
mov
CHPCON,#00000011b
TF0
TR0
A,SFRFD
SFRAL,#0FEh
SFRAH,#0FFh
SFRCN,#READ_DID
TL0,#LOW (65536-READ_TIME)
TH0,#HIGH(65536-READ_TIME)
TR0
CHPCON,#00000011b
TF0
TR0
A,SFRFD
SFRCN,#FLASH_STANDBY
SFRFD,#0FFh
SFRAL,#0FFh
SFRAH,#0FFh
TR0
CHPCON,#00000011b
TF0
TR0
EAPAGE,#01h
SFRCN,#ERASE_ROM
;read device id high byte
;read device id low byte
;set EAPAGE is APROM
W78E054D/W78E052D/W78E051D Data Sheet
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