W78E516B40DL Nuvoton Technology Corporation of America, W78E516B40DL Datasheet - Page 35

• Manufacturer Part Number: W78E516B40DL
• Description: IC MCU 8-BIT 64K FLASH 40-DIP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E516B40DL

• Core Processor: 8052
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR
• Number Of I /o: 32
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

BLANK_CHECK_ERROR:
;*******************************************************************************
;* RE-PROGRAMMING 64KB APROM BANK
;*******************************************************************************
PROGRAM_64KROM:
PROG_D_64K:
;*****************************************************************************
; * VERIFY 64KB APROM BANK
;*****************************************************************************
INC SFRAL
MOV A, SFRAL
JNZ BLANK_CHECK_LOOP
INC SFRAH
MOV A, SFRAH
CJNE A, #0H, BLANK_CHECK_LOOP ; END ADDRESS = FFFFH
JMP PROGRAM_64KROM
CJNE R2, #0H, PROG_D_64K
INC R1
MOV SFRAH, R1
MOV P1, #F0H
MOV P3, #F0H
JMP $
MOV DPTR, #0H
MOV R1, #00H
MOV DPTR, #0H
MOV SFRAH, R1
MOV R6, #5AH
MOV R7, #FFH
MOV TL0, R6
MOV TH0, R7
MOV SFRAL, R2
MOVX A, @DPTR
MOV SFRFD, A
MOV TCON, #10H
MOV PCON, #01H
INC DPTR
INC R2
CJNE R1, #0H, PROG_D_64K
MOV R4, #03H
MOV R6, #FBH
MOV R7, #FFH
MOV TL0, R6
MOV TH0, R7
MOV DPTR, #0H
MOV R2, #0H
MOV R1, #0H
MOV SFRAH, R1
MOV SFRCN, #00H
MOV R2, #00H
MOV SFRCN, #21H
; NEXT ADDRESS
; READ DATA FROM EXTERNAL SRAM BUFFER
; SFRFD (C6H) = DATA IN
; The start address of sample code
; THE ADDRESS OF NEW ROM CODE
; TARGET LOW BYTE ADDRESS
; TARGET HIGH BYTE ADDRESS
; EXTERNAL SRAM BUFFER ADDRESS
; SFRAH, TARGET HIGH ADDRESS
; SFRCN (C7H) = 21 (PROGRAM 64K)
; SET TIMER FOR PROGRAMMING, ABOUT 50 μS.
; SFRAL (C4H) = LOW BYTE ADDRESS
; TCON = 10H, TR0 = 1, GO
; ENTER IDLE MODE (PRORGAMMING)
; ERROR COUNTER
; SET TIMER FOR READ VERIFY, ABOUT 1.5 μS.
; Target low byte address
; Target high byte address
; SFRAH, Target high address
; SFRCN = 00 (Read ROM CODE)
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Publication Release Date: December 4, 2006
W78E516B
Revision A11