CZ miniSTM32F103VE-EK

STM32F103VET6


Board

NameCZ miniSTM32F103VE-EK
PartUnknown
BrandUnknown
OriginChina

Microcontroller

PartSTM32F103VET6
ManufacturerST-Microelectronics
CoreArm Cortex-M3
Max. Clock Speed72MHz
PackageLQFP 100 pins

Internal memories

FLASH512KiB
SRAM48KiB

Oscillators

HSI8MHz
LSI40kHz
HSE8MHz
LSE32.768kHz

Power

Sources
Any +3.3V pin (+3.3V)
Any +5V pin (+5V)
USB connector (+5V)
VDDA pinNo
VSSA pinNo
VREF- pinNo
VREF+ pinYes
Backup batteryHolder (12.5mm / 12)

Regulator

ManufacturerAdvanced Monolithic Systems Inc.
PartAMS1117 (AMS1117)
PackageSOT223 3 pins
Input+4.6V to +15V
Output+3.3V @ 1A
DatasheetAMS1117.pdf

PCB

ColorBlue
Size (w x l)76mm x 105mm
Mounting4x mounting hole (M3)

Remarks

  • Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.

Pictures

CZ miniSTM32F103VE-EK: Perspective view
CZ miniSTM32F103VE-EK: Perspective view
CZ miniSTM32F103VE-EK: Top view
CZ miniSTM32F103VE-EK: Top view
CZ miniSTM32F103VE-EK: Bottom view
CZ miniSTM32F103VE-EK: Bottom view

Inputs & outputs


Reset button

Name RESET
Reference K1
Type Button
Connected to NRST
Mode Active low

BOOT0 jumper

Name -
Reference -
Type 2-way jumper
Connected to BOOT0
Mode N.A.
  • Note: This jumper is part of Header 2.

BOOT1 jumper

Name -
Reference -
Type 2-way jumper
Connected to BOOT1
Mode N.A.
  • Note: This jumper is part of Header 2.

User button 1

Name -
Reference K2
Type Button
Connected to PE3
Mode Active low

User button 2

Name -
Reference K3
Type Button
Connected to PC5
Mode Active low

Serial to USB Rx jumper

Name MCU_RXD
Reference J7
Type 1-way jumper
Connected to PA10
Mode N.A.
  • Note: Connects microcontroller Rx to CH340G Tx.

Serial to USB Tx jumper

Name MCU_TXD
Reference J7
Type 1-way jumper
Connected to PA9
Mode N.A.
  • Note: Connects microcontroller Tx to CH340G Rx.

Power source switch

Name Pwr sw
Reference -
Type Switch
Connected to +5V USB
Mode N.A.

Power LED

Name Pwr
Reference DS3
Type LED
Connected to +3.3V rail
Mode N.A.

User LED 1

Name -
Reference DS1
Type LED
Connected to PE5
Mode Sink

User LED 2

Name -
Reference DS2
Type LED
Connected to PE6
Mode Sink

Connectors & headers


Header 1 properties

Name Unknown
Reference J1
Type Pin header (2.54mm, 23x2, male)

Header 1 pins

# Name Function Connected to
1 GND - Ground plane
2 3V3 - +3.3V rail
3 PC0 - PC0
4 PC1 - PC1
5 PC2 - PC2
6 PC3 - PC3
7 3V3 - +3.3V rail
8 VREF - VREF+
9 PA0 - PA0
10 PA1 - PA1
11 PA2 - PA2
12 PA3 - PA3
13 PA4 - PA4
14 PA5 - PA5
15 PA6 - PA6
16 PA7 - PA7
17 PC4 - PC4
18 PC5 - PC5
19 PB0 - PB0
20 PB1 - PB1
21 PB2 - PB2
22 PE7 - PE7
23 PE8 - PE8
24 PE9 - PE9
25 PE10 - PE10
26 PE11 - PE11
27 PE12 - PE12
28 PE13 - PE13
29 PE14 - PE14
30 PE15 - PE15
31 PB10 - PB10
32 PB11 - PB11
33 PB12 - PB12
34 PB13 - PB13
35 PB14 - PB14
36 PB15 - PB15
37 PD8 - PD8
38 PD9 - PD9
39 PD10 - PD10
40 PD11 - PD11
41 PD12 - PD12
42 PD13 - PD13
43 PD14 - PD14
44 PD15 - PD15
45 GND - Ground plane
46 5V - +5V rail

Header 2 properties

Name Unknown
Reference J2
Type Pin header (2.54mm, 25x2, male)

Header 2 pins

# Name Function Connected to
1 3V3 - +3.3V rail
2 GND - Ground plane
3 PC15 - PC15
4 PC14 - PC14
5 PC13 - PC13
6 PE6 - PE6
7 PE5 - PE5
8 PE4 - PE4
9 PE3 - PE3
10 PE2 - PE2
11 PE1 - PE1
12 PE0 - PE0
13 PB9 - PB9
14 PB8 - PB8
15 PB7 - PB7
16 PB6 - PB6
17 PB5 - PB5
18 PB4 - PB4
19 PB3 - PB3
20 PD7 - PD7
21 PD6 - PD6
22 PD5 - PD5
23 PD4 - PD4
24 PD3 - PD3
25 PD2 - PD2
26 PD1 - PD1
27 PD0 - PD0
28 PC12 - PC12
29 PC11 - PC11
30 PC10 - PC10
31 PA15 - PA15
32 PA14 - PA14
33 PA13 - PA13
34 PA12 - PA12
35 PA11 - PA11
36 PA10 - PA10
37 PA9 - PA9
38 PA8 - PA8
39 PC9 - PC9
40 PC8 - PC8
41 PC7 - PC7
42 PC6 - PC6
43 5V - +5V rail
44 GND - Ground plane
45 3V3 - +3.3V rail
46 3V3 - +3.3V rail
47 BOOT1 - BOOT1
48 BOOT0 - BOOT0
49 GND - Ground plane
50 GND - Ground plane

Main USB connector properties

Name USB
Reference CN3
Type USB Mini

Main USB connector pins

# Name Function Connected to
1 - VCC +5V rail
2 - D- PA11
3 - D+ PA12
4 - ID N.C.
5 - GND Ground plane

Serial USB connector properties

Name USB-232
Reference CN4
Type USB Mini

Serial USB connector pins

# Name Function Connected to
1 - VCC +5V rail
2 - D- CH340 Pin 6
3 - D+ CH340 Pin 5
4 - ID N.C.
5 - GND Ground plane

JTAG header properties

Name JTAG
Reference CN1
Type IDC (2.54mm, 10x2, male)

JTAG header pins

# Name Function Connected to
1 - VCC +3.3V rail
2 - VCC +3.3V rail
3 - TRST PB4
4 - GND Ground plane
5 - TDI PA15
6 - GND Ground plane
7 - TMS / SWDIO PA13
8 - GND Ground plane
9 - TCLK / SWCLK PA14
10 - GND Ground plane
11 - RTCK N.C.
12 - GND Ground plane
13 - TDO / SWO PB3
14 - GND Ground plane
15 - RESET NRST
16 - GND Ground plane
17 - N.C. N.C.
18 - GND Ground plane
19 - N.C. +5V rail
20 - GND Ground plane

SD-card connector properties

Name TF
Reference CN2
Type microSD

SD-card connector pins

# Name Function Connected to
1 - DAT2 N.C.
2 - CD/DAT3 PC11
3 - CMD PD2
4 - VDD +3.3V rail
5 - CLK PC12
6 - VSS Ground plane
7 - DAT0 PC8
8 - DAT1 N.C.
9 - CD N.C.
10 - Body Ground plane

TFT LCD header properties

Name TFT
Reference J3
Type Pin header (2.54mm, 16x2, female)

TFT LCD header pins

# Name Function Connected to
1 GND - Ground plane
2 PE1 - PE1
3 PD10 - PD10
4 PD9 - PD9
5 PD8 - PD8
6 PE15 - PE15
7 PE14 - PE14
8 PE13 - PE13
9 PE12 - PE12
10 PE11 - PE11
11 PE10 - PE10
12 PE9 - PE9
13 PE8 - PE8
14 PE7 - PE7
15 PD1 - PD1
16 PD0 - PD0
17 PD15 - PD15
18 PD14 - PD14
19 PD4 - PD4
20 PD5 - PD5
21 PD11 - PD11
22 PD7 - PD7
23 PA5 - PA5
24 PB7 - PB7
25 PA7 - PA7
26 PA6 - PA6
27 PB6 - PB6
28 PD13 - PD13
29 5V - +5V rail
30 PC2 - PC2
31 3V3 - +3.3V rail
32 GND - Ground plane

nRF24L01 module header properties

Name nRF24L01
Reference J8
Type Pin header (2.54mm, 4x2, female)

nRF24L01 module header pins

# Name Function Connected to
1 GND GND Ground plane
2 3V3 VCC +3.3V rail
3 PE4 CE PE4
4 PE2 CSN PE2
5 PB3 SCK PB3
6 PB5 MOSI PB5
7 PB4 MISO PB4
8 PC13 IRQ PC13

ESP-1 module header properties

Name ESP-1
Reference J9
Type Pin header (2.54mm, 4x2, female)

ESP-1 module header pins

# Name Function Connected to
1 GND GND Ground plane
2 PB11 GPIO1 PB11
3 PC0 GPIO2 PC0
4 PA0 EN PA0
5 PC1 GPIO0 PC1
6 PC3 RST PC3
7 PB10 GPIO3 PB10
8 3V3 VCC +3.3V rail

Devices


CH340 properties

Name Unknown
Reference U2
Manufacturer WCH
Part CH340
Marking CH340G
Datasheet CH340.pdf
Package SSOP 16 pins
Description USB to Serial converter

CH340 pins

# Name Function Connected to
1 - GND Ground plane
2 - TXD PA9 via J7
3 - RXD PA10 via J7
4 - V3 N.C.
5 - UD+ D+ pin on CN4
6 - UD- D- pin on CN4
7 - XI Crystal Y1
8 - XO Crystal Y1
9 - CTS# N.C.
10 - DSR# N.C.
11 - RI# N.C.
12 - DCD# N.C.
13 - DTR# Pull-up R16 to +3.3V rail
14 - RTS# N.C.
15 - R232 N.C.
16 - VCC N.C.

HK24C04 properties

Name Unknown
Reference U5
Manufacturer HangShun
Part HK24C04
Marking HK24C04
Datasheet Unavailable
Package SOP 8 pins
Description 4KiB I2C EEPROM

HK24C04 pins

# Name Function Connected to
1 - A0 Ground plane
2 - A1 Ground plane
3 - A2 Ground plane
4 - GND Ground plane
5 - SDA PB7
6 - SCL PB6
7 - WP Ground plane
8 - VCC +3.3V rail

W25Q16DV properties

Name Unknown
Reference U6
Manufacturer Winbond Electronics Corporation
Part W25Q16DV
Marking W25Q16DVSIG
Datasheet W25Q16DV.pdf
Package SOIC 8 pins
Description 2MiB Dual/Quad SPI FLASH

W25Q16DV pins

# Name Function Connected to
1 - /CS +3.3V rail via 4.7kΩ resistor
2 - DO PA6
3 - /WP +3.3V rail
4 - GND Ground plane
5 - DI PA7
6 - CLK PA5
7 - /HOLD +3.3V rail
8 - VCC +3.3V rail

HS0038 properties footprint

Name Unknown
Reference J4
Manufacturer Vishay Intertechnology, Inc.
Part HS0038
Marking Unknown
Datasheet HS0038B.pdf
Package Mold 3 pins
Description Infrared receiver

HS0038 pins footprint

# Name Function Connected to
1 D OUT PA1
2 - GND Ground plane
3 + VCC +3.3V rail

DS18B20 properties footprint

Name Unknown
Reference J5
Manufacturer Maxim Integrated Products, Inc.
Part DS18B20
Marking Unknown
Datasheet DS18B20.pdf
Package TO-92 3 pins
Description 1-wire temperature sensor

DS18B20 pins footprint

# Name Function Connected to
1 - GND Ground plane
2 D DQ PD12
3 + VDD +3.3V rail