STA321MP datasheet(9/50 Pages) STMICROELECTRONICS

9 / 50 page

STA321MP

Pin connections

Doc ID 022647 Rev 1

9/50

Table 2.

Pin description: TQFP-64 (STA321MPL)

number

Type

Name

Description

5-V tolerant TTL input buffer

PDM_CLK

PDM I/F CLK

5-V tolerant TTL input buffer

PDMIN_6

PDM input channel 6

5-V tolerant TTL input buffer

PDMIN_5

PDM input channel 5

5-V tolerant TTL input buffer

PDMIN_4

PDM input channel 4

5-V tolerant TTL input buffer

PDMIN_3

PDM input channel 3

5-V tolerant TTL input buffer

PDMIN_2

PDM input channel 2

5-V tolerant TTL input buffer

PDMIN_1

PDM input channel 1

5-V tolerant TTL Schmitt trigger input buffer

RESET

Global reset

CMOS input buffer with pull-down

PLLB

Bypass phase-locked loop

Bidirectional buffer: 5-V tolerant TTL Schmitt

trigger input; 3.3-V capable 2 mA slew-rate

controlled output

SDA

Serial data (I2C)

5-V tolerant TTL Schmitt trigger input buffer

SCL

Serial clock (I2C)

5-V tolerant TTL Schmitt trigger input buffer

XTI

Crystal oscillator input (clock input)

Analog pad

FILTER_PLL

PLL filter

3.3-V analog supply voltage

VDDA

PLL supply

Analog ground

GNDA

PLL ground

3.3-V capable TTL tristate 4 mA output buffer CKOUT

Clock output