W78E516DPG Nuvoton Technology Corporation of America, W78E516DPG Datasheet - Page 58

• Manufacturer Part Number: W78E516DPG
• Description: IC MCU 8-BIT 64K FLASH 44-PLCC
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E516DPG

• 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: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

Typical Watch-Dog time-out period when OSC = 20 MHz
WIDL
IDLE
OSC
W atchdog Timer Block Diagram
1/12
1/6
Preliminary W78E516D/W78E058D Data Sheet
Figure 15- 1 Watchdog Timer Block Diagram
PS2 PS1 PS0
0
0
0
0
1
1
1
1
Table 15- 1 Watch-Dog time-out period
ENW
0
1
0
1
0
0
1
1
0
0
1
1
0
1
0
1
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PRESCALE
19.66 mS
39.32 mS
78.64 mS
157.28 mS
314.57 mS
629.14 mS
1.25 S
2.50 S
Watchdog time-out period
CLRW
R
EXTERNAL
RESET
14- BIT TIMER
CLEAR
INTERNAL
RESET