W78E516DPG Nuvoton Technology Corporation of America, W78E516DPG Datasheet - Page 36

• Manufacturer Part Number: W78E516DPG
• Description: IC MCU 8-BIT 64K FLASH 44-PLCC
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E516DPG

• 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: 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: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

Mnemonic: B
Chip Enable Register
Mnemonic: CHPENR
The CHPCON is read only by default .You must write #87,#59H sequentially to this special register
CHPENR to enable the CHPCON write attribute, and write other value to disable CHPCON write
attribute. This register protects from writing to the CHPCON register carelessly.
Bit
7-0
Bit:
Bit:
Name
B
7
B.7
7
CHPENR.
7
Function
The B register is the standard 8052 register that serves as a second accumulator.
6
B.6
6
CHPENR.
6
Preliminary W78E516D/W78E058D Data Sheet
5
B.5
5
CHPENR.
5
4
B.4
4
CHPENR.
4
- 36 -
3
B.3
3
CHPENR.
3
2
B.2
2
CHPENR.
2
1
B.1
1
CHPENR.
1
Address: F0h
Address: F6h
0
B.0
0
CHPENR.
0