W78L801A24LL Nuvoton Technology Corporation of America, W78L801A24LL Datasheet - Page 11
![no-image](/images/manufacturer_photos/0/4/485/nuvoton_technology_corporation_of_america_sml.jpg)
W78L801A24LL
Manufacturer Part Number
W78L801A24LL
Description
IC MCU 8-BIT 4K ROM 48-LQFP
Manufacturer
Nuvoton Technology Corporation of America
Series
W78r
Datasheet
1.W78L801A24LL.pdf
(24 pages)
Specifications of W78L801A24LL
Core Processor
8051
Core Size
8-Bit
Speed
24MHz
Connectivity
EBI/EMI
Peripherals
LED, WDT
Number Of I /o
36
Program Memory Size
4KB (4K x 8)
Program Memory Type
Mask ROM
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
W78L801A24LL
Manufacturer:
Nuvoton Technology Corporation of America
Quantity:
10 000
Watchdog Timer Control Register
ENW : Enable watch-dog if set.
CLRW : Clear watch-dog timer and prescaler if set. This flag will be cleared automatically
WIDL : If this bit is set, watch-dog is enabled under IDLE mode. If cleared, watch-dog is disabled
PS2, PS1, PS0: Watch-dog prescaler timer select. Prescaler is selected when set PS2 − 0 as
The time-out period is obtained using the following formula:
Before Watchdog time-out occurs, the program must clear the 14-bit timer by writing 1 to WDTC.6
(CLRW). After 1 is written to this bit, the 14-bit timer, prescaler and this bit will be reset on the next
instruction cycle. The Watchdog timer is cleared on reset.
OSC
1
×
WIDL
IDLE
Watchdog Timer Block Diagram
2
OSC
14
under IDLE mode. Default is cleared.
×
PRESCALER 1000 12 mS
PS2 PS1 PS0
0
0
0
0
1
1
1
1
follows:
1/12
0
1
0
1
0
0
1
1
Bit:
0
0
1
1
0
1
0
1
ENW
×
Mnemonic: WDTC
7
ENW
×
CLRW
6
WIDL
PRESCALER
- 11 -
5
CLRW
EXTERNAL
Address: 8FH
RESET
4
-
14-BIT TIMER
PRESCALER SELECT
Publication Release Date: June 04, 2006
CLEAR
3
-
128
256
16
32
64
2
4
8
PS2
2
PS1
W78L801
1
INTERNAL
RESET
Revision A10
PS0
0