W78E052DDG Nuvoton Technology Corporation of America, W78E052DDG Datasheet - Page 83

• 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_Company_ID
;************************************************************************
Read_Company_ID:
CID_Error:
;************************************************************************
; * read device ID high
;************************************************************************
Read_Device_ID_HIGH:
mov
mov
call
call
call
call
call
call
call
call
sjmp
mov
mov
mov
setb
mov
clr
clr
mov
cjne
ret
mov
sjmp
mov
mov
mov
mov
mov
setb
SP,#060h
TMOD,#01h
Read_Company_ID
Read_Device_ID_HIGH
Read_Device_ID_LOW
Erase_APROM
Erase_Verify_ROM
Program_APROM
Program_Verify_APROM
Software_Reset
$
SFRCN,#READ_CID
TL0,#LOW (65536-READ_TIME)
TH0,#HIGH(65536-READ_TIME)
TR0
CHPCON,#00000011b
TF0
TR0
A,SFRFD
A,#0DAh,CID_Error
P1,#01h
$
SFRAL,#0FFh
SFRAH,#0FFh
SFRCN,#READ_DID
TL0,#LOW (65536-READ_TIME)
TH0,#HIGH(65536-READ_TIME)
TR0
;Set Timer0 as mode1
;check Read company ID
W78E054D/W78E052D/W78E051D Data Sheet
- 83 -
Publication Release Date: Dec 29, 2009
Revision A09