W78E052DDG Nuvoton Technology Corporation of America, W78E052DDG Datasheet - Page 85

• 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: -

;************************************************************************
; * VERIFY APROM BANK
;************************************************************************
Erase_Verify_ROM:
er_lp:
Erase_Verify_Error:
;*******************************************************************************
;*PROGRAMMING APROM BANK, APROM write 55h,AAh,55h,AAh........
;*******************************************************************************
Program_APROM:
mov
mov
setb
mov
mov
clr
clr
ret
mov
mov
mov
mov
mov
mov
setb
mov
clr
clr
mov
cjne
inc
mov
cjne
mov
cjne
ret
mov
sjmp
TL0,#LOW (65536-ERASE_TIME)
TH0,#HIGH(65536-ERASE_TIME)
TR0
CHPCON,#00000011b
EAPAGE,#00h
TF0
TR0
SFRCN,#ERASE_VERIFY
DPTR,#0000h
TL0,#LOW (65536-READ_TIME)
TH0,#HIGH(65536-READ_TIME)
SFRAL,DPL
SFRAH,DPH
TR0
CHPCON,#00000011b
TF0
TR0
A,SFRFD
A,#0FFh,Erase_Verify_Error
DPTR
R0,DPL
R0,#LOW (APROM_END_ADDRESS),er_lp
R1,DPH
R1,#HIGH(APROM_END_ADDRESS),er_lp
P1,#02h
$
;clear EAPAGE
W78E054D/W78E052D/W78E051D Data Sheet
- 85 -
Publication Release Date: Dec 29, 2009
Revision A09