SN250 datasheet(9/130 Pages) STMICROELECTRONICS

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SN250

Pin assignment

9/130

GPIO3

I/O

Digital I/O

(enable GPIO3 with GPIO_CFG[7:4])

nSSEL

SPI slave select of Serial Controller SC2

(enable SC2-4S with GPIO_CFG[7:4], select SPI with SC2_MODE, enable

slave with SC2_SPICFG[4])

TMR1IB.1

Capture Input B of Timer 1

(enable CAP1-0 with GPIO_CFG[7:4])

GPIO4

I/O

Digital I/O

(enable GPIO4 with GPIO_CFG[12] and GPIO_CFG[8])

ADC0

Analog

ADC Input 0

(enable ADC0 with GPIO_CFG[12] and GPIO_CFG[8])

PTI_EN

Frame signal of Packet Trace Interface (PTI)

(enable PTI with GPIO_CFG[12])

GPIO5

I/O

Digital I/O

(enable GPIO5 with GPIO_CFG[12] and GPIO_CFG[9])

ADC1

Analog

ADC Input 1

(enable ADC1 with GPIO_CFG[12] and GPIO_CFG[9])

PTI_DATA

Data signal of Packet Trace Interface (PTI)

(enable PTI with GPIO_CFG[12])

VDD_PADS

Power

Pads supply (2.1–3.6V)

GPIO6

I/O

Digital I/O

(enable GPIO6 with GPIO_CFG[10])

ADC2

Analog

ADC Input 2

(enable ADC2 with GPIO_CFG[10])

TMR2CLK

External clock input of Timer 2

TMR1ENMSK

External enable mask of Timer 1

GPIO7

I/O

Digital I/O

(enable GPIO7 with GPIO_CFG[13] and GPIO_CFG[11])

ADC3

Analog

ADC Input 3

(enable ADC3 with GPIO_CFG[13] and GPIO_CFG[11])

REG_EN

External regulator open collector output

(enable REG_EN with GPIO_CFG[13])

GPIO8

I/O

Digital I/O

(enable GPIO8 with GPIO_CFG[14])

VREF_OUT

Analog

ADC reference output

(enable VREF_OUT with GPIO_CFG[14])

TMR1CLK

External clock input of Timer 1

TMR2ENMSK

External enable mask of Timer 2

IRQA

External interrupt source A

Table 1.

Pin descriptions (continued)

Pin #

Signal

Direction

Description

SN250 数据表(PDF) 9 Page - STMicroelectronics

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SN250 数据表(PDF) 9 Page - STMicroelectronics

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Html Pages

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