Datasheet

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STM32F21xxx Pinouts and pin description
174
Table 7. STM32F21x pin and ball definitions
Pins
Pin name
(function after
reset)
(1)
Pin type
I / O structure
Note
Alternate functions
Additional
functions
LQFP64
LQFP100 LQFP144 LQFP176
UFBGA176
- 1 1 1 A2 PE2 I/O FT
TRACECLK, FSMC_A23,
ETH_MII_TXD3, EVENTOUT
- 2 2 2 A1 PE3 I/O FT
TRACED0, FSMC_A19,
EVENTOUT
- 3 3 3 B1 PE4 I/O FT
TRACED1, FSMC_A20,
DCMI_D4/ EVENTOUT
- 4 4 4 B2 PE5 I/O FT
TRACED2, FSMC_A21,
TIM9_CH1, DCMI_D6,
EVENTOUT
- 5 5 5 B3 PE6 I/O FT
TRACED3, FSMC_A22,
TIM9_CH2, DCMI_D7,
EVENTOUT
1666C1 V
BAT
S
- - - 7 D2 PI8 I/O FT
(2)(3)
EVENTOUT RTC_AF2
2 7 7 8 D1 PC13 I/O FT
(2)(3)
EVENTOUT RTC_AF1
3889E1
PC14/OSC32_IN
(PC14)
I/O FT
(2)(3)
EVENTOUT OSC32_IN
(4)
49910F1
PC15/
OSC32_OUT
(PC15)
I/O FT
(2)(3)
EVENTOUT OSC32_OUT
(4)
- - - 11 D3 PI9 I/O FT CAN1_RX, EVENTOUT
- - - 12 E3 PI10 I/O FT ETH_MII_RX_ER, EVENTOUT
- - - 13 E4 PI11 I/O FT
OTG_HS_ULPI_DIR,
EVENTOUT
---14F2 V
SS
S
---15F3 V
DD
S
- - 10 16 E2 PF0 I/O FT
FSMC_A0, I2C2_SDA,
EVENTOUT
- - 11 17 H3 PF1 I/O FT
FSMC_A1, I2C2_SCL,
EVENTOUT
- - 12 18 H2 PF2 I/O FT
FSMC_A2, I2C2_SMBA,
EVENTOUT
- - 13 19 J2 PF3 I/O FT
(4)
FSMC_A3, EVENTOUT ADC3_IN9