W78E516DPG Nuvoton Technology Corporation of America, W78E516DPG Datasheet - Page 14

• 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: -

Since the scratch-pad RAM is only 256bytes it can be used only when data contents are small. There
are several other special purpose areas within the scratch-pad RAM. These are illustrated in next
figure.
Figure 8- 2 W78E516D/W78E058D RAM and SFR Memory Map
Preliminary W78E516D/W78E058D Data Sheet
FFH
80H
7FH
00H
256 bytes RAM and SFR Data Memory Space
Addressing
Addressing
Indirect
Indirect
Direct
RAM
RAM
&
- 14 -
Addressing
Direct
Only
SFR