STV0684 STMicroelectronics, STV0684 Datasheet - Page 15

• Manufacturer Part Number: STV0684
• Description: IC COPROCESSR VC5700/6700 196BGA
• Manufacturer: STMicroelectronics

Specifications of STV0684

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 196-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3901

STV0684
3.2
ST20-C103 core
The ST20 is the core of the STV0684 system-on-chip. The processor executes its code either from
the 64 kbyte of private SRAM or directly from the external SDRAM. Instruction/data cache ensure a
fast code execution.
A boot loader or ROM provides the capability to boot the system by copying the application firmware
image from the Non Volatile Memory (SPI flash or standard NAND flash) to the program SRAM or
SDRAM memory. This mechanism ensures the lowest system cost by storing the application
firmware on a low-cost mass storage memory and thus avoiding the extra cost of a NOR type
memory. The boot loader also provides the useful possibility to upgrade the application firmware
and therefore program cameras on the factory line.
The ST20-C103 core includes the following:
ST20C1 processor running at 48 MHz frequency
Diagnostic control unit DCU3 (4 compare, 4 capture, trace) for debug and code development
PWM4 timer
INTC2 interrupt controller (16 inputs)
64 K local RAM (SRAM)
4 K D-cache & 4 K I-cache instruction and data caches memory arbiter
Functional Description
15/30