ꢃꢅ-bit �RM Coꢁtex™-Mꢃ MCU
HTꢃꢅF1ꢅ51/51B/5ꢅ/5ꢃ
Pin Assignment
Holtek HT32F1251B
LQFP48
AF0
AF0
AF3
AF2
AF1
48 47 46 45 44 4ꢃ 4ꢅ 41 40 ꢃ9 ꢃ8 ꢃ7
AF1
AF2
AF3
(Default)
(Default)
�P
�P Pꢃꢃ Pꢃꢃ ꢃꢃV ꢃꢃV ꢃꢃV ꢃꢃV ꢃꢃV ꢃꢃV
P18
ꢃꢃV
ꢃꢃV
5VT
5VT
5VT
5VT
Pꢃꢃ
Pꢃꢃ
Pꢃꢃ
5VT
5VT
5VT
�P
V
SSA_2
1
ꢅ
ꢃ6 XTALOUT
PB1
PB0
-
-
-
ꢃꢃV
ꢃꢃV
ꢃꢃV
ꢃꢃV
ꢃꢃV
ꢃꢃV
ꢃꢃV
ꢃꢃV
5VT
5VT
5VT
P18
GT0_Ch3
GT0_CH2
GT0_CH1
GT0_CH0
GT1_ETI
-
ADC_IN0
ADC_IN1
ADC_IN2
ADC_IN3
ADC_IN4
ADC_IN5
ADC_IN6
ADC_IN7
-
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
ꢃ5
ꢃ4
ꢃꢃ
ꢃꢅ
ꢃ1
ꢃ0
ꢅ9
ꢅ8
ꢅ7
ꢅ6
ꢅ5
XTALIN
PB15
-
Pꢃꢃ
ꢃ
SPI_MOSI
UR_RI
GT1_CH0
GT1_CH1
GT1_CH2
GT1_CH3
3.3 V Digital Power Pad
UR_DCD
UR_DSR
4
PB14
SPI_MISO UR_DTR
�P
3.3 V Analog Power Pad
5
PB13
SPI_SCK
SPI_SEL
UR_DSR
UR_DCD
P18
SPI_MOSI UR_DTR
6
PB12
1.8 V Power Pad
SPI_MISO
UR_RI
7
V
SS33_3
SS33_2
ꢃꢃV
3.3 V I/O Pad
UR_RTS
/TXE
UR_CTS
SPI_SCK
8
V
5VT
SPI_SEL
9
VDD33_2
5 V Tolerance I/O Pad
/SCK
TRACE
SWO
-
-
-
UR_RX
PA8
10
11
1ꢅ
PA15
PA14
PA13
-
-
-
GT0_CH0
GT0_CH1
GT0_CH2
High Current Output
5VT
PA9-
BOOT0
PA10-
5 V Tolerance I/O Pad
UR_TX
-
-
SWCLK
-
SWDIO
BOOT1
Pꢃꢃ Pꢃꢃ 5VT
5VT 5VT 5VT 5VT
1ꢃ 14 15 16 17 18 19 ꢅ0 ꢅ1 ꢅꢅ ꢅꢃ ꢅ4
Figure 4. HT32F1251B 48LQFP Pin Assignment
Rev. 1.10
18 of ꢃ5
�ꢀꢁiꢂ 1ꢃꢄ ꢅ01ꢅ
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
