ST7263BEx datasheet(11/186 Pages) STMICROELECTRONICS

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ST7263Bxx

Introduction

Doc ID 7516 Rev 8

11/186

Introduction

The ST7263B microcontrollers form a sub-family of the ST7 MCUs dedicated to USB

applications. The devices are based on an industry-standard 8-bit core and feature an

enhanced instruction set. They operate at a 24 MHz or 12 MHz oscillator frequency. Under

software control, the ST7263B MCUs may be placed in either Wait or Halt modes, thus

reducing power consumption. The enhanced instruction set and addressing modes afford

real programming potential. In addition to standard 8-bit data management, the ST7263B

MCUs feature true bit manipulation, 8x8 unsigned multiplication and indirect addressing

modes. The devices include an ST7 core, up to 32 Kbytes of program memory, up to

1024 bytes of RAM, 27 I/O lines and the following on-chip peripherals:

●

USB low speed interface with 3 endpoints with programmable in/out configuration using

the DMA architecture with embedded 3.3 V voltage regulator and transceivers (no

external components are needed).

●

8-bit analog-to-digital converter (ADC) with 12 multiplexed analog inputs

●

Industry standard asynchronous SCI serial interface

●

Watchdog

●

16-bit Timer featuring an External clock input, 2 input Captures, 2 output Compares

with Pulse Generator capabilities

●

Fast I²C multimaster interface

●

Low voltage reset (LVD) ensuring proper power-on or power-off of the device

The ST72F63B devices are Flash versions. They support programming in IAP mode (In-

application programming) via the on-chip USB interface.

Table 2.

Device overview

Features

ST7263BHx

ST7263BDx

ST7263BKx

ST7263BEx

Program

memory -

Kbytes (Flash /

ROM)

RAM (stack) -

bytes

1024

(128)

512

(128)

384

(128)

1024 (128)

1024

(128

512

(128)

384

(128)

384

(128

1024

(128)

512

(128)

384

(128)

384

(128)

Standard

Peripherals

Watchdog timer, 16-bit timer, USB

Other

Peripherals

SCI, I²C, ADC

SCI,

ADC

SCI, I²C

I/Os (high

current)

27 (10)

19 (10)

14 (6)

Operating

Supply

4.0 V to 5.5 V

CPU frequency

8 MHz (with 24 MHz oscillator) or 4 MHz (with 12 MHz oscillator)

Operating

temp.

0°C to +70°C

Packages

LQFP48 (7x7)

QFN40

(6x6)

SDIP32/

SO34

QFN40

(6x6)

SDIP32/

SO34

SO24

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