W77E058A40DL Nuvoton Technology Corporation of America, W77E058A40DL Datasheet - Page 12

• Manufacturer Part Number: W77E058A40DL
• Description: IC MCU 8-BIT 32K FLASH 40-DIP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W77r

Specifications of W77E058A40DL

• Program Memory Type: FLASH
• Program Memory Size: 32KB (32K x 8)
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, Serial Port
• Peripherals: POR, WDT
• Number Of I /o: 32
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP
• Cpu Family: W77
• Device Core: 8051
• Device Core Size: 8b
• Frequency (max): 40MHz
• Interface Type: UART
• Total Internal Ram Size: 1KB
• # I/os (max): 32
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Instruction Set Architecture: CISC
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 40
• Package Type: PDIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant

A brief description of the SFRs now follows.
Port 0
Port 0 is an open-drain bi-directional I/O port. This port also provides a multiplexed low order
address/data bus during accesses to external memory.
Stack Pointer
The Stack Pointer stores the Scratchpad RAM address where the stack begins. In other words, it
always points to the top of the stack.
Data Pointer Low
This is the low byte of the standard 8052 16-bit data pointer.
Data Pointer High
This is the high byte of the standard 8052 16-bit data pointer.
Data Pointer Low 1
Mnemonic: P0
Mnemonic: SP
Mnemonic: DPL
Mnemonic: DPH
Mnemonic: DPL1
Bit:
Bit:
Bit:
Bit:
Bit:
DPL1.7 DPL1.6 DPL1.5 DPL1.4 DPL1.3 DPL1.2 DPL1.1 DPL1.0
DPH.7
DPL.7
SP.7
P0.7
7
7
7
7
7
DPH.6
DPL.6
SP.6
P0.6
6
6
6
6
6
DPH.5
DPL.5
SP.5
P0.5
- 12 -
5
5
5
5
5
DPH.4
DPL.4
SP.4
P0.4
4
4
4
4
4
DPH.3
DPL.3
SP.3
P0.3
3
3
3
3
3
Address: 80h
Address: 81h
Address: 82h
Address: 83h
Address: 84h
DPH.2
DPL.2
SP.2
P0.2
2
2
2
2
2
W77E058A
DPH.1
DPL.1
SP.1
P0.1
1
1
1
1
1
DPH.0
DPL.0
P0.0
SP.0
0
0
0
0
0