W78E516B40DL Nuvoton Technology Corporation of America, W78E516B40DL Datasheet - Page 19

• 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: -

Timer Interrupt Service Routine:
Setting Timer and enable Timer
Stop Timer & disable interrupt
(15 ms for erasing operation)
Setting erase operation mode:
Start Timer and enter IDLE
(Erase 64KB APROM)
Is F04KBOOT Mode?
interrupt for wake-up .
MOV SFRCN,#22H
be wakened by Timer
(CHPCON.7=1)
operation. CPU will
No
(Erasing...)
End of erase
Mode.
interrupt.
PGM
Go
Yes
Reset the CHPCON Register:
MOV CHPENR,#87H
MOV CHPENR,#59H
MOV CHPCON,#03H
Setting Timer and enable Timer
(50us for program operation)
Get the parameters of new code
through I/O ports, UART or
MOV SFRAH,#ADDRESS_H
MOV SFRAL,#ADDRESS_L
MOV SFRFD,#DATA
MOV SFRCN,#21H
(Address and data bytes)
Setting control registers for
- 19 -
End of Programming ?
interrupt for wake-up .
other interfaces.
programming:
PGM
No
Publication Release Date: December 4, 2006
Yes
Part 2: 4KB LDROM
Procedure of Updating
the 64KB APROM
Software reset CPU and
re-boot from the 64KB
APROM.
00H in the 64KB APROM.
MOV CHPENR,#87H
MOV CHPENR,#59H
MOV CHPCON,#83H
Executing new code
F04KBOOT Mode ?
Is currently in the
from address
END
No
W78E516B
invalid in F04KBOOT
new 64 KB APROM.
Yes
Hardware Reset
to re-boot from
(S/W reset is
Revision A11
Mode)