STA2065

System description

Doc ID16050 Rev 1

5/20

2

System description

2.1

MCU

ARM1176-JZF advanced risc machine CPU up to 624 MHz (with Vdd greater or equal to

1.20 V and under process and temperature worst case conditions).

2.2

Embedded memories

2.2.1

Embedded SRAM (eSRAM)

The embedded SRAM is 8K x 32 (32 KB).

2.3

System functions

2.3.1

System and reset controller (SRC)

This provides a control interface for clock generation components external to the subsystem.

It also controls system-wide and peripherals-specific energy management features.

2.3.2

PMU

The power manager module controls the SLEEP to DEEP-SLEEP modes transition,

controls the external voltage switches on the Vdd and Vddio, monitors the external power

supply (via two signals, Vddok and BATOK), can force the emergency entry of the SDRAM

in self-refresh, and controls the wake-up from DEEP-SLEEP mode.

2.3.3

DMA

Direct memory access can be used with DMA peripherals. FIFO fill/empty requests from

these peripherals can be serviced immediately by the DMA Controller without CPU

interaction. Peripheral-to-peripheral and memory-to-memory DMA are also supported.

STA2065 features two DMA engines. Each DMA supports up to 8-channels and up to 32

requests.

2.3.4

Vectored interrupt controller (VIC)

The VIC allows the OS interrupt handler to quickly dispatch interrupt service routines in

response to peripheral interrupts.

2.3.5

GPIOs

Four GPIO ports provide 160 programmable inputs or outputs that can be controlled in two

modes:

●

software mode through an APB bus interface

●

hardware mode through a hardware control interface