ST72411R datasheet(4/71 Pages) STMICROELECTRONICS

4 / 71 page

ST72411R

4/71

1 GENERAL DESCRIPTION

1.1 INTRODUCTION

The ST72411R devices are members of the ST7

microcontroller family. They are designed for

Smartcard reader applications.

All ST72411R family devices are based on a com-

mon industry-standard 8-bit core, featuring an en-

hanced instruction set.

The ST72C411R devices feature single-voltage

FLASH memory with byte-by-byte In-Situ Pro-

gramming (ISP) capability.

Under software control, all devices can be placed

in WAIT, SLOW, or HALT mode, reducing power

consumption when the application is in idle or

standby state.

The enhanced instruction set and addressing

modes of the ST7 offer both power and flexibility to

software developers, enabling the design of highly

efficient and compact application code. In addition

to standard 8-bit data management, all ST7 micro-

controllers feature true bit manipulation, 8x8 un-

signed multiplication and indirect addressing

modes.

Figure 1. Device Block Diagram

8-BIT CORE

ALU

OSC_SEL

CONTROL

PROGRAM

(4K Bytes)

VSS

RESE T

RAM

(256 Bytes)

PORT A

PA7:0

(8 bits)

8-BIT TIMER

PORT B

PB6:0

(7 bits)

VDD

OSCIN

INTEGR ATED

LVDS

MEMORY

7.16 MHZ

OSCILLATOR

SC SUPP LY

SUPE RVISOR

SC_PWR

LCD DRIVER

LCD RAM (32x4)

SEG31:0

(32 segments)

COM3:0

(4 coms)

VREF

(SSS)

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