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CH341A Datasheet(Folha de dados) 10 Page - List of Unclassifed Manufacturers

Nome de Peças. CH341A
descrição  CH341 is a USB bus convert chip, providing UART, printer port, parallel and synchronous serial with 2-wire or 4-wire through USB bus
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Fbricantes  ETC2 [List of Unclassifed Manufacturers]
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The DataSheet of CH341 (the first)
10
temperature
VCC=V3=3.3V
-40
85
TS
Storage temperature
-55
125
VCC
Voltage source (VCC connects to power, GND to ground)
-0.5
6.5
V
VIO
The voltage of input or output pin
-0.5
VCC+0.5
V
6.2. Electrical parameter (test conditions: TA=25℃, VCC=5V, excluding pin connection of USB bus)
(If the source voltage is 3.3V, multiply 40% of the current parameter)
Name
Parameter note
Min.
Typical
Max.
Units
V3 doesn’t connect to VCC
4.5
5
5.3
V
VCC
Source voltage
V3 connect to VCC
3.3
3.3
3.6
V
ICC
Total source current when working
15
30
mA
ISLP
Total source current when USB suspending
0.05
0.15
0.5
mA
VIL
Input Voltage LOW
-0.5
0.7
V
VIH
Input Voltage HIGH
2.0
VCC+0.5
V
VOL
Output Voltage LOW (draw 4mA current)
0.5
V
VOH
Output Voltage HIGH (output 4mA current)
(Output 100uA current during chip reset)
VCC-0.5
V
IUPs
SCL and SDA output current HIGH
100
200
500
uA
IUP
Input current with pull-up resistor internal
30
70
160
uA
IDN
Input current with pull-down resistor internal
-50
-180
uA
VR
Restrict voltage when power-up reset
2.3
2.6
2.9
V
6.3. Basic time sequence parameter (test conditions: TA=25℃, VCC=5V or VCC=V3=3.3V)
Name
Parameter note
Min.
Typical
Max.
Units
FCLK
Frequency of input clock in XI
11.98
12.00
12.02
MHz
TPR
Reset time of power-up
20
40
mS
TRI
Effective signal width of external reset input
100
nS
TRD
Reset delay time of external reset input
30
mS
6.4. Print interface time sequence parameter (test conditions: TA=25℃, VCC=5V or
VCC=V3=3.3V, refer to the accessorial image)
Name
Parameter note
Min.
Typical
Max.
Units
Low speed
800
840
10000
nS
TWPRT
STB# low-level width
High speed
400
420
10000
nS
Low speed
800
nS
TSPRT
STB# high-level width
High speed
560
nS
TDS
Data to STB# Low set-up time
240
nS
TDH
Data hold time after STB# high
240
nS
TBZ
BUSY low to STB# low
160
nS
TWA
ACK# pulse width
100
nS
TAK
ACK# high to STB# low
160
nS




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