W78E052DDG Nuvoton Technology Corporation of America, W78E052DDG Datasheet - Page 82

• 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: -

Application Note: In-system Programming Software Examples
This application note illustrates the in-system programmability of the microcontroller. In this example,
microcontroller will boot from 2K LDROM bank enter in-system programming mode for programming
the contents of APROM, this sample to Erase APROM, Erase Verify APROM, Read one byte for
APROM, Write one byte for APROM, Read CID/DID. .
EXAMPLE: Base on Keil C51 Compiler
$nomod51
#include <reg52.h>
EAPAGE
CHPCON
SFRAL
SFRAH
SFRFD
SFRCN
;CPU Clock = 12MHz/12T mode
READ_TIME
PROGRAM_TIME
ERASE_TIME
;For W78E(I)054D
APROM_END_ADDRESS
;For W78E(I)052D
;APROM_END_ADDRESS
;For W78E(I)051D
;APROM_END_ADDRESS
FLASH_STANDBY
READ_CID
READ_DID
ERASE_ROM
ERASE_VERIFY
PROGRAM_ROM
PROGRAM_VERIFY_ROM EQU
READ_ROM
ORG
03800h
DATA
DATA
DATA
DATA
DATA
DATA
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
1
50
5000
03800h
00111111B
00001011B
00001100B
00100010B
00001001B
00100001B
00001010B
00000000B
0BEh
0BFh
0C4h
0C5h
0C6h
0C7h
02000h
01000h
W78E054D/W78E052D/W78E051D Data Sheet
- 82 -