UM0034 datasheet(33/39 Pages) STMICROELECTRONICS

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ST7-EMU3 series emulator

Glossary

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I2C (Inter-integrated circuit)

A protocol for a bus that can be connected to multiple integrated circuits and that allows

any one of them to initiate data transfer.

ICC (In-circuit communication)

A device communication protocol that is stored in the ST7 microcontroller’s system

memory. This protocol makes it possible to download programs to the MCU’s RAM and

execute them. This protocol enables in-circuit programming and debugging.

ICC monitor

Software that handles the ICC protocol, embedded in a reserved memory area of the

ST7 Flash microcontroller. At RESET, using specific signal sequence, the ST7 jumps to

this ICC monitor which allows it to download programs in RAM and to execute them.

This feature is used for in-circuit programming and debugging.

ICD (In-circuit debugging)

The capability to debug an application on a FLASH device using on-chip resources

(Debug Module, MTC), made possible by the ICC protocol.

ICP (In-circuit programming)

The capability to program to ST7 FLASH memory while the microcontroller is plugged

into the application board, made possible by the ICC protocol.

LVD (Low voltage detection)

A feature available on all of the ST7s. A LVD push button allows you to simulate what

occurs when the MCU detects that the supply voltage is below a given threshold.

MCU (Microcontroller)

Also referred to as the “target device” in this manual. This is the core product (or family

of products) for which the Development is designed to act as an emulator and

programming tool. In general terms, an MCU is a complete computer system, including

a CPU, memory, a clock oscillator and I/O on a single integrated circuit.

MTC (Memory trace controller)

An ST7 hardware peripheral that allows the user to record hardware cycles in a

specified block of memory (buffer) when in-circuit debugging. Allows recording in either

circular mode, continuously recording and replacing the oldest record, or linear mode,

recording until the buffer is full.

OTP (One time programmable)

Also referred to as OTPROM (one time programmable read-only memory). A non-

volatile type of memory that can be programmed but cannot be erased. An OTP ROM

is an EPROM MCU that is packaged in an opaque plastic package—it is called a one-

time programmable MCU because there is no way to expose the EPROM to a UV light

source.

UM0034 데이터시트(PDF) 33 Page - STMicroelectronics