W78E052DDG Nuvoton Technology Corporation of America, W78E052DDG Datasheet - Page 18

• 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: -

9
The W78E054D/W78E052D/W78E051D series uses Special Function Registers (SFRs) to control and
monitor peripherals and their Modes. The SFRs reside in the register locations 80-FFh and are ac-
cessed by direct addressing only. Some of the SFRs are bit addressable. This is very useful in cases
where users wish to modify a particular bit without changing the others. The SFRs that are bit ad-
dressable are those whose addresses end in 0 or 8. The W78E054D/W78E052D/W78E051D series
contain all the SFRs present in the standard 8052. However some additional SFRs are added. In
some cases the unused bits in the original 8052, have been given new functions. The list of the SFRs
is as follows.
Note:
1. The SFRs in the column with dark borders are bit-addressable
2. The table is condensed with eight locations per row. Empty locations indicate that these are no reg-
isters at these addresses. When a bit or register is not implemented, it will read high.
D8 P4
D0 PSW
C8 T2CON
C0 XICON
F8
F0 B
E8
E0 ACC
B8 IP
B0 P3
A8 IE
A0 P2
98 SCON
90 P1
88 TCON
80 P0
SPECIAL FUNCTION REGISTERS
T2MOD
SBUF
TMOD
SP
Table 9-1: Special Function Register Location Table
RCAP2L
TL0
DPL
W78E054D/W78E052D/W78E051D Data Sheet
RCAP2H
TL1
DPH
- 18 -
TL2
SFRAL
TH0
TH2
TH1
SFRAH
SFRRD
EAPAGE CHPCON
AUXR
P0UPR
WDTC
SFRCN
IPH
PCON
EF
DF
D7
CF
C7
BF
AF
FF
F7
E7
B7
A7
9F
97
8F
87