W78E052DDG Nuvoton Technology Corporation of America, W78E052DDG Datasheet - Page 2

• Manufacturer Part Number: W78E052DDG
• Description: IC MCU 8-BIT 8K FLASH 40-DIP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E052DDG

• 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: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

14
15
16
17
18
19
20
21
13.2
13.3
13.4
13.5
13.6
PROGRAMMABLE TIMERS/COUNTERS ............................................................................... 50
14.1
14.2
14.3
WATCHDOG TIMER................................................................................................................. 55
SERIAL PORT .......................................................................................................................... 57
16.1
16.2
16.3
FLASH ROM CODE BOOT MODE SELECTION ..................................................................... 62
ISP(IN-SYSTEM PROGRAMMING) ......................................................................................... 63
CONFIG BITS ........................................................................................................................... 67
TYPICAL APPLICATION CIRCUITS ........................................................................................ 69
ELECTRICAL CHARACTERISTICS......................................................................................... 70
21.1
21.2
21.3
21.4
13.1.3
13.1.4
Interrupts....................................................................................................................... 46
Interrupt Sources .......................................................................................................... 46
Priority Level Structure ................................................................................................. 46
Interrupt Response Time .............................................................................................. 48
Interrupt Inputs.............................................................................................................. 49
Timer/Counters 0 & 1.................................................................................................... 50
Time-Base Selection..................................................................................................... 50
14.2.1
14.2.2
14.2.3
14.2.4
Timer/Counter 2 ............................................................................................................ 52
14.3.1
14.3.2
14.3.3
14.3.4
MODE 0 ........................................................................................................................ 57
MODE 1 ........................................................................................................................ 58
MODE 2 ........................................................................................................................ 59
Absolute Maximum Ratings .......................................................................................... 70
DC ELECTRICAL CHARACTERISTICS ...................................................................... 71
AC ELECTRICAL CHARACTERISTICS ...................................................................... 72
21.3.1
21.3.2
21.3.3
21.3.4
21.3.5
21.3.6
TIMING waveforms ....................................................................................................... 75
21.4.1
21.4.2
21.4.3
21.4.4
21.4.5
Watchdog Timer Reset.................................................................................................45
RESET STATE .............................................................................................................45
Mode 0 .........................................................................................................................50
Mode 1 .........................................................................................................................50
Mode 2 .........................................................................................................................51
Mode 3 .........................................................................................................................51
Capture Mode...............................................................................................................52
Auto-Reload Mode, Counting up ..................................................................................53
Auto-reload Mode, Counting Up/Down .........................................................................53
Baud Rate Generator Mode .........................................................................................54
Clock Input Waveform ..................................................................................................72
Program Fetch Cycle....................................................................................................73
Data Read Cycle ..........................................................................................................73
Data Write Cycle...........................................................................................................74
Port Access Cycle ........................................................................................................74
Program Operation .......................................................................................................74
Program Fetch Cycle....................................................................................................75
Data Read Cycle ..........................................................................................................75
Data Write Cycle...........................................................................................................76
Port Access Cycle ........................................................................................................76
Reset Pin Access Cycle ...............................................................................................77
W78E054D/W78E052D/W78E051D Data Sheet
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