W78E516DPG Nuvoton Technology Corporation of America, W78E516DPG Datasheet - Page 13

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W78E516DPG

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

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
-

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0
8
The W78E516D/W78E058D series separate the memory into two separate sections, the Program
Memory and the Data Memory. The Program Memory is used to store the instruction op-codes, while
the Data Memory is used to store data or for memory mapped devices.
8.1
The Program Memory on the W78E516D/W78E058D series can be up to 64K/32K bytes long. All
instructions are fetched for execution from this memory area. The MOVC instruction can also access
this memory region.
8.2
As mentioned before the W78E516D/W78E058D series have separate Program and Data Memory
areas. There are also several Special Function Registers (SFRs) which can be accessed by software.
The SFRs can be accessed only by direct addressing, while the on-chip RAM can be accessed by
either direct or indirect addressing.
FFH
80H
7FH
00H
MEMORY ORGANIZATION
Program Memory (on-chip Flash)
Scratch-pad RAM and Register Map
Addressing
Addressing
Direct &
Indirect
Indirect
RAM
RAM
00H
FFH
256 byte On Chip
AUX RAM
SFRs Direct
Addressing
Only
Preliminary W78E516D/ W78E058D Data Sheet
Figure 8- 1 Memory Map
FFFFH
0000H
64K Bytes
External
memory
Data
- 13 -
AP Flash
On Chip
Bytes
64k
Publication Release Date: July 30, 2008
FFFFH
0000H
0000H
FFFH
4K byte On Chip
LD ROM
Revision A01

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