UM0244

Overview

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1

Overview

The family of STR91x devices offer In-System Programming (ISP) allowing a completely

blank device to be programmed while soldered to a circuit board. This simplifies

manufacturing and provides an effective way to update products after they are in use.

STR91x devices comply to the core requirements of the IEEE 1149.1 JTAG specification.

The FlashLINK cable assembly shown in Figure 1 will perform ISP only on STR91x devices,

not memory or logic devices from other vendors. The software development tool

Configuration and Programming Software (CAPS) is a Windows based program which

operates the FlashLINK cable assembly (CAPS may be downloaded at no charge from

www.st.com/mcu).

CAPS will generate JAM STAPL and SVF files for use with 3rd party JTAG programming

equipment.

The five basic JTAG pins (JTCK, JTMS, JTDI, JTDO, JRST) on STR91x devices are

dedicated to operate as JTAG pin at all times.

Figure 1.

FlashLINK cable assembly

Note:

14-pin ribbon cable may also be used.

Mates

with

PC

parallel

port

FlashLINK

Adapter

6 feet

DB-25 Cable, M-F

straight-through wiring

6 inches

Target

device

12 WIRES

Flying lead

cable

DB-25

Cable

AI08862