W78E051B40DL Nuvoton Technology Corporation of America, W78E051B40DL Datasheet - Page 6

• Manufacturer Part Number: W78E051B40DL
• Description: IC MCU 8-BIT 4K FLASH 40-DIP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E051B40DL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

5. BLOCK DIAGRAM
P1.0
P1.7
P3.0
P3.7
P4.3
P4.0
~
~
~
INT2
INT3
Port
1
Port
Port
3
4
Interrupt
UART
Port 3
Port 4
Port 1
Latch
Timer
Timer
Latch
Latch
0
1
XTAL1
Oscillator
XTAL2
PSW
Bus & Clock
Instruction
Sequencer
Controller
Decoder
ALE
ACC
&
T1
PSEN
ALU
Reset Block
Watchdog
SFR RAM
RAM & SFR
Timer
Address
128 bytes
- 6 -
ROM
RST
T2
B
Pointer
Stack
Power control
Vcc
Vss
Temp Reg.
Addr. Reg.
Incrementor
DPTR
PC
Port 0
Latch
Port 2
Latch
W78E51B
Port
Port
2
0
P0.0
P0.7
P2.0
P2.7
~
~