ST7263BE1 Просмотр технического описания (PDF) - STMicroelectronics

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ST7263BE1

Low speed USB 8-bit MCU family with up to 32 KB Flash/ROM, DFU capability, 8-bit ADC, WDG, timer, SCI and I²C

STMicroelectronics 

Introduction

Figure 1. General block diagram

OSCIN

OSCOUT

VDD

VSS

RESET

OSCILLATOR

INTERNAL

CLOCK

OSC/3

OSC/4 or OSC/2

for USB2)

POWER

SUPPLY

WATCHDOG

CONTROL

8-BIT CORE

ALU

LVD

USB DMA

VPP/TEST

VDDA

VSSA

PROGRAM

MEMORY

(32K Bytes)

RAM

(1024 Bytes)

ST7263Bxx

I²C

PORT A

16-BIT TIMER

PORT B

ADC(1)

PORT D

PORT C

SCI

(UART)

USB SIE

PA[7:0]

(8 bits)

PB[7:0]

(8 bits)

PD[7:0]

(8 bits)

PC[2:0]

(3 bits)

USBDP

USBDM

USBVCC

1. ADC channels:

12 on 48-pin devices (Port B and Port D[3:0])

8 on 34 and 32-pin devices (Port B)

None on 24-pin devices

2. 12 or 24 MHz OSCIN frequency required to generate 6 MHz USB clock.

3. The drive from USBVCC is sufficient to only drive an external pull-up in addition to the internal transceiver.

12/186

Doc ID 7516 Rev 8

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