W77E058A40DL Nuvoton Technology Corporation of America, W77E058A40DL Datasheet - Page 13

• 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

This is the low byte of the new additional 16-bit data pointer that has been added to the W77E058. The
user can switch between DPL, DPH and DPL1, DPH1 simply by setting register DPS = 1. The
instructions that use DPTR will now access DPL1 and DPH1 in place of DPL and DPH. If they are not
required they can be used as conventional register locations by the user.
Data Pointer High 1
This is the high byte of the new additional 16-bit data pointer that has been added to the W77E058.
The user can switch between DPL, DPH and DPL1, DPH1 simply by setting register DPS = 1. The
instructions that use DPTR will now access DPL1 and DPH1 in place of DPL and DPH. If they are not
required they can be used as conventional register locations by the user.
Data Pointer Select
DPS.0: This bit is used to select either the DPL,DPH pair or the DPL1,DPH1 pair as the active Data
DPS.1-7:These bits are reserved, but will read 0.
Power Control
SMOD : This bit doubles the serial port baud rate in mode 1, 2, and 3 when set to 1.
SMOD0: Framing Error Detection Enable: When SMOD0 is set to 1, then SCON.7(SCON1.7)
GF1-0: These two bits are general purpose user flags.
PD:
IDL:
Pointer. When set to 1, DPL1, DPH1 will be selected, otherwise DPL,DPH will be selected.
Setting this bit causes the W77E058 to go into the POWER DOWN mode. In this mode all the
clocks are stopped and program execution is frozen.
Setting this bit causes the W77E058 to go into the IDLE mode. In this mode the clocks to the
CPU are stopped, so program execution is frozen. But the clock to the serial, timer and
interrupt blocks is not stopped, and these blocks continue operating.
indicates a Frame Error and acts as the FE(FE_1) flag. When SMOD0 is 0, then
SCON.7(SCON1.7) acts as per the standard 8052 function.
Mnemonic: DPH1
Mnemonic: DPS
Mnemonic: PCON
Bit:
Bit:
Bit:
DPH1.7 DPH1.6 DPH1.5 DPH1.4 DPH1.3 DPH1.2 DPH1.1 DPH1.0
SM0D
7
7
7
-
SMOD0
6
6
6
-
- 13 -
5
5
5
-
-
4
4
4
-
-
Publication Release Date: April 17, 2007
GF1
3
3
3
-
Address: 85h
Address: 86h
Address: 87h
GF0
2
2
2
-
W77E058A
PD
1
1
1
-
Revision A10
DPS.0
IDL
0
0
0