4
BIT MCU
W541
SERIES
4-Bit
Single Chip Micro Mini MCU with small DIE size and Low Power
(some devices can operate below 1.5V). All items come with
a built-in LCD Segment Driver. This Family is ideal for
portable products such as remote controllers, gifts, toys,
clocks, timers, and thermometers.
|
Part
No.
|
Working
Voltage
|
ROM
Size
|
RAM
Size
|
Working
Frequency
|
System
Clock
|
IO
|
LCD
Share Output
|
LCD
|
Others
|
Package
|
|
W541L20x
|
1.2-1.8v
|
2k*16
|
128*4
|
H:400KHZ~1MHz,
|
Single
|
20
|
-
|
-
|
MFP
|
DIP:18,20,28;
SOP:20,28
|
|
L:32768Hz
|
Crystal/RC
|
|
W541L23x
|
1.2-3.6v
|
1/1.5
/ 2k*16
|
64/96
/ 128*4
|
H:100K~800KHz;
|
Single
/ Dual
|
12
|
16
|
4*16
|
MFP
|
44PLCC
|
|
L:32768Hz
|
Crystal/RC
|
|
W541L240
|
1.2-1.8v
|
2k*16
|
64*4
|
H:400KHZ~1MHz,
|
Single
|
12
|
-
|
4*24
|
MFP
|
80
QFP
|
|
L:32768Hz
|
Crystal/RC
|
|
W541L250
|
1.2-1.8v
|
2k*16
|
128*4
|
H:400KHZ~1MHz,
|
Single
|
20
|
24
|
4*24
|
MFP
|
80
QFP
|
|
L:32768Hz
|
Crystal/RC
|
|
W541L260
|
1.2-1.8v
|
2k*16
|
128*4
|
H:400KHZ~1MHz,
|
Single
/ Dual
|
20
|
32
|
4*32
|
MFP
|
80
QFP
|
|
L:32768Hz
|
Crystal/RC
|
|
W541L261
|
1.2-3.6v
|
2k*16
|
128*4
|
H:400KHZ~1MHz,
|
Single
/ Dual
|
20
|
32
|
4*32
|
MFP
|
80
QFP
|
|
W541L480
|
1.2-3.6v
|
4k*16
|
256*4
|
H:400KHZ~1MHz,
|
Single
/ Dual
|
20
|
32
|
4*32
|
MFP
|
80
QFP
|
|
W541C20x
|
2.4-5.5v
|
2k*16
|
128*4
|
H:400KHZ~4MHz,
|
Single
|
20
|
-
|
-
|
MFP
|
DIP:18,20,28;
SOP:20,28
|
|
L:32768Hz
|
Crystal/RC
|
|
W541C250
|
2.4-5.5v
|
2k*16
|
128*4
|
H:400KHZ~4MHz,
|
Single
|
20
|
24
|
4*24
|
MFP
|
80
QFP
|
|
L:32768Hz
|
Crystal/RC
|
|
W541C261
|
2.4-5.5v
|
2k*16
|
128*4
|
H:400KHZ~4MHz,
|
Single
/ Dual
|
20
|
32
|
4*32
|
MFP
|
80
QFP
|
|
L:32768Hz
|
Crystal/RC
|
|
W541C480
|
2.4-5.5v
|
4k*16
|
256*4
|
H:400KHZ~4MHz,
|
Single
/ Dual
|
20
|
32
|
4*32
|
MFP
|
80
QFP
|
|
L:32768Hz
|
Crystal/RC
|
|
W541E20x
|
2.4-5.5v
|
2k*16
|
128*4
|
H:400KHZ~4MHz,
|
Single
|
20
|
-
|
-
|
MFP
|
DIP:18,20,28;
SOP:20,28
|
|
L:32768Hz
|
Crystal/RC
|
|
W541E261
|
2.4-5.5v
|
2k*16
|
128*4
|
H:400KHZ~4MHz,
|
Single
/ Dual
|
20
|
32
|
4*32
|
MFP
|
80
QFP
|
|
L:32768Hz
|
Crystal/RC
|
|
W541E480
|
2.4-5.5v
|
4k*16
|
256*4
|
H:400KHZ~4MHz,
|
Single
/ Dual
|
20
|
32
|
4*32
|
MFP
|
80
QFP
|
|
L:32768Hz
|
Crystal/RC
|
|
|
|
|
|
|
|
|
|
|
|
|
