STA1095 datasheet(16/127 Pages) STMICROELECTRONICS

16 / 127 page

System description

STA108x, STA109x

16/127

DS13319 Rev 2

A specific set of peripherals can be reserved and locked to be only accessible from

Cortex-M3, thus allowing a complete independent subsystem to be realized. In addition to

that, specific secure GPIOs as well as wake signals are reserved for such subsystem.

2.8

General purpose ADC

Accordo2 has a 10-input SAR ADC with 10-bit resolution and sampling frequency up to 2.5

MHz.

2.9

GPIOs

Accordo2 has 179 GPIOs in STA109x and 130 in STA108x (16 of which are dedicated to

Embedded Isolated Vehicle Interface subsystem). They can be independently configured

either as INPUT or OUTPUT. In order to make the system flexible, these IOs are multiplexed

on PINs with other peripherals (the alternate function scheme is provided as a separate

document).

2.10

Generic interfaces

2.10.1

4x UARTS:



Programmable baud rates up to 3 Mbps



Hardware Flow control



DMA capability.

2.10.2

3x I2C:



Master/slave modes in multi-master environment



Multiple baud rates supported: 100/400/1000/3400 Kbps



DMA capability.

2.10.3

3xSSP/SPI ports supporting:



Motorola SPI-compatible interface



Texas Instrument synchronous serial interface



National Semiconductor Microwire interface



Unidirectional interface



DMA capability.

2.11

Input capture / Output compare

5 EFT (Enhanced Function timers) implement a very flexible input capture and output

compare feature set. Each EFT block can provide 2 Input capture and 2 output PWM lines.

EFT are based on 16-bit counters with dedicated prescaler.

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