W77E058A40DL Nuvoton Technology Corporation of America, W77E058A40DL Datasheet - Page 16

• 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

Clock Control
WD1-0: Watchdog timer mode select bits: These bits determine the time-out period for the watchdog
T2M:
T1M:
T0M:
MD2-0: Stretch MOVX select bits: These three bits are used to select the stretch value for the MOVX
Timer 2 clock select: When T2M is set to 1, timer 2 uses a divide by 4 clock, and when set to
0 it uses a divide by 12 clock.
Timer 1 clock select: When T1M is set to 1, timer 1 uses a divide by 4 clock, and when set to
0 it uses a divide by 12 clock.
Timer 0 clock select: When T0M is set to 1, timer 0 uses a divide by 4 clock, and when set to
0 it uses a divide by 12 clock.
timer. In all four time-out options the reset time-out is 512 clocks more than the interrupt time-
out period.
instruction. Using a variable MOVX length enables the user to access slower external memory
devices or peripherals without the need for external circuits. The RD or WR strobe will be
stretched by the selected interval. When accessing the on-chip SRAM, the MOVX instruction
is always in 2 machine cycles regardless of the stretch setting. By default, the stretch has
value of 1. If the user needs faster accessing, then a stretch value of 0 should be selected.
Mnemonic: CKCON
MD2
0
0
0
0
1
1
1
1
Bit:
MD1
WD1
0
0
1
1
0
0
1
1
0
0
1
1
WD1
7
MD0
WD0
0
1
0
1
0
1
0
1
0
1
0
1
WD0
6
Stretch value
Interrupt time-out
T2M
2
2
2
2
0
1
2
3
4
5
6
7
- 16 -
5
17
20
23
26
MOVX duration
2 machine cycles
3 machine cycles (Default)
4 machine cycles
5 machine cycles
6 machine cycles
7 machine cycles
8 machine cycles
9 machine cycles
T1M
4
Reset time-out
2
2
2
2
17
20
23
26
T0M
3
+ 512
+ 512
+ 512
+ 512
Address: 8Eh
MD2
2
W77E058A
MD1
1
MD0
0