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CH438L on a board, in 3D

CH438L

WCH (Nanjing Qinheng Microelectronics)

128Byte 3.3V~5.3V 40mA 4Mbps 8 Internal Oscillator LQFP-128(14x14) UART ROHS

Extended
DatasheetJLCPCBLCSCwch/CH438L
Category
UART
Package
LQFP-128(14x14)
Pins
128

Overview

The CH438L is an UART made by WCH (Nanjing Qinheng Microelectronics) in a LQFP-128(14x14) package with 128 pins. 128Byte 3.3V~5.3V 40mA 4Mbps 8 Internal Oscillator LQFP-128(14x14) UART ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CH438L, from EasyEDA) and its footprint (Package_QFP:LQFP-128_14x14mm_P0.4mm, from KiCad's library), ready for a KiCad board. 1 are in stock at JLCPCB (part C2685239).

Symbol

GND1NC2NC3NC4NC5NC6A6/ALE7A58A49A310A211A112A013NC14NC15GND16NC17NC18NC19NC20NC21NC22NC23CTS424RTS425RXD426TXD427TXD328GND29VCC30RXD331RTS332DTR333CTS334DSR335RI336DCD337DTR438DTR639DTR540NC41NC42NC43VCC44NC45GND46XI47XO48DSR449RI450DCD451DSR552RI553DCD554DSR655RI656DTR757NC58DCD259RI260DSR261CTS262RXD263DTR264TXD265RTS266VCC67GND68CTS169DSR170RI171DCD172DTR173RTS174TXD175RXD176TXD577RTS578CTS579RXD580TXD681RXD682TXD783RXD784TXD085RXD086RTS087DTR088DCD089RI090DSR091CTS092GND93VCC94DCD795RI796DSR797DCD698RTS799CTS7100RTS6101CTS6102INT103RST#104GND105GND106D7107D6108D5109D4110D3111D2112D1113D0114NC115NC116NC117NC118NC119GND120NC121AMOD122CS#123RD#124WR#125NC126NC127VCC128
EasyEDA_Cloud:CH438LFrom EasyEDA

Footprint

Package_QFP:LQFP-128_14x14mm_P0.4mmFrom KiCad's library

Parameters

7
Current - Supply
10mA
Data Rate(Max)
4Mbps
Features
Built-in clock oscillator
Memory Size
128Byte
Number of Channels
8
Operating Temperature
-40℃~+85℃
Voltage - Supply
3.3V~5.3V

Order codes

1

Pinout

128
The pins of the CH438L
PinNameType
1GNDUnspecified
2NCUnspecified
3NCUnspecified
4NCUnspecified
5NCUnspecified
6NCUnspecified
7A6/ALEUnspecified
8A5Unspecified
9A4Unspecified
10A3Unspecified
11A2Unspecified
12A1Unspecified
13A0Unspecified
14NCUnspecified
15NCUnspecified
16GNDUnspecified
17NCUnspecified
18NCUnspecified
19NCUnspecified
20NCUnspecified
21NCUnspecified
22NCUnspecified
23NCUnspecified
24CTS4Unspecified
25RTS4Unspecified
26RXD4Unspecified
27TXD4Unspecified
28TXD3Unspecified
29GNDUnspecified
30VCCUnspecified
31RXD3Unspecified
32RTS3Unspecified
33DTR3Unspecified
34CTS3Unspecified
35DSR3Unspecified
36RI3Unspecified
37DCD3Unspecified
38DTR4Unspecified
39DTR6Unspecified
40DTR5Unspecified
41NCUnspecified
42NCUnspecified
43NCUnspecified
44VCCUnspecified
45NCUnspecified
46GNDUnspecified
47XIUnspecified
48XOUnspecified
49DSR4Unspecified
50RI4Unspecified
51DCD4Unspecified
52DSR5Unspecified
53RI5Unspecified
54DCD5Unspecified
55DSR6Unspecified
56RI6Unspecified
57DTR7Unspecified
58NCUnspecified
59DCD2Unspecified
60RI2Unspecified
61DSR2Unspecified
62CTS2Unspecified
63RXD2Unspecified
64DTR2Unspecified
65TXD2Unspecified
66RTS2Unspecified
67VCCUnspecified
68GNDUnspecified
69CTS1Unspecified
70DSR1Unspecified
71RI1Unspecified
72DCD1Unspecified
73DTR1Unspecified
74RTS1Unspecified
75TXD1Unspecified
76RXD1Unspecified
77TXD5Unspecified
78RTS5Unspecified
79CTS5Unspecified
80RXD5Unspecified
81TXD6Unspecified
82RXD6Unspecified
83TXD7Unspecified
84RXD7Unspecified
85TXD0Unspecified
86RXD0Unspecified
87RTS0Unspecified
88DTR0Unspecified
89DCD0Unspecified
90RI0Unspecified
91DSR0Unspecified
92CTS0Unspecified
93GNDUnspecified
94VCCUnspecified
95DCD7Unspecified
96RI7Unspecified
97DSR7Unspecified
98DCD6Unspecified
99RTS7Unspecified
100CTS7Unspecified
101RTS6Unspecified
102CTS6Unspecified
103INTUnspecified
104RST#Unspecified
105GNDUnspecified
106GNDUnspecified
107D7Unspecified
108D6Unspecified
109D5Unspecified
110D4Unspecified
111D3Unspecified
112D2Unspecified
113D1Unspecified
114D0Unspecified
115NCUnspecified
116NCUnspecified
117NCUnspecified
118NCUnspecified
119NCUnspecified
120GNDUnspecified
121NCUnspecified
122AMODUnspecified
123CS#Unspecified
124RD#Unspecified
125WR#Unspecified
126NCUnspecified
127NCUnspecified
128VCCUnspecified

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Questions

Is there a KiCad symbol and footprint for the CH438L?

Yes. The symbol is EasyEDA_Cloud:CH438L and the footprint Package_QFP:LQFP-128_14x14mm_P0.4mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH438L?

LQFP-128(14x14), with 128 pins. Its footprint is drawn on this page.

Where is the CH438L datasheet?

WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.

Where can I order the CH438L?

JLCPCB lists it as part C2685239, with 1 in stock; the sellers' links on this page open their listings.

What can replace the CH438L?

Parts like it in the library: the PI7C9X7952BFDEX by Diodes Incorporated. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

1