ST72F321BAR6TCRE datasheet(31/247 Pages) STMICROELECTRONICS

31 / 247 page

ST72321Bxxx-Auto

Package pinout and pin description

31/247

Legend / Abbreviations for Table 2:

Type:

I = input

O = output

S = supply

Input level:

A = dedicated analog input

In/Output level:

C = CMOS 0.3VDD/0.7VDD

CT = CMOS 0.3VDD/0.7VDD with input trigger

Output level:

HS = 20mA high sink (on N-buffer only)

Port and control configuration:

●

Input:

float = floating

wpu = weak pull-up

int = interrupt(a)

ana = analog

●

Output:

OD = open-drain(b)

PP = push-pull

PE1/RDI

I/O CT

Port E1

SCI Receive Data In

-(1)

PE2

I/O CT

X(6)

X(6) Port E2

(2)(1)

PE3

I/O CT

Port E3

On the chip, each I/O port may have up to 8 pads. Pads that are not bonded to external pins are in input pull-up

configuration after reset. The configuration of these pads must be kept at reset state to avoid added current consumption.

On the chip, each I/O port may have up to eight pads. Pads that are not bonded to external pins are in input pull-up

configuration after reset. The configuration of these pads must be kept at reset state to avoid added current consumption.

It is mandatory to connect all available VDD and VAREF pins to the supply voltage and all VSS and VSSA pins to ground.

Not connected in 48 Kbyte and 64 Kbyte ROM devices

OSC1 and OSC2 pins connect a crystal/ceramic resonator or an external source to the on-chip oscillator; see Chapter 1:

Introduction on page 18 and Section 19.5: Clock and timing characteristics on page 199 for more details.

Pull-up always activated on PE2; see limitation Section 22.1.8: Pull-up always active on PE2 on page 244.

Table 2.

Device pin description (continued)

Pin No.

Pin name

Level

Port

Main

function

(after

reset)

Alternate function

Input

Output

In the interrupt input column, “eiX” defines the associated external interrupt vector. If the weak pull-up column

(wpu) is merged with the interrupt column (int), then the I/O configuration is pull-up interrupt input, otherwise

the configuration is floating interrupt input.

In the open-drain output column, “T” defines a true open-drain I/O (P-Buffer and protection diode to VDD are not

implemented). See Chapter 9: I/O ports on page 75 and Section 19.8: I/O port pin characteristics on page 207

for more details.

ST72F321BAR6TCRE Scheda tecnica(PDF) 31 Page - STMicroelectronics

ST72F321BAR6TCRE Scheda tecnica(HTML) 31 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Scheda tecnica Scarica

Link URL