参数资料
型号: ST72F623F2B1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP20
封装: 0.300 INCH, LEAD FREE, SHRINK, PLASTIC, DIP-20
文件页数: 122/139页
文件大小: 1264K
代理商: ST72F623F2B1
ST7262xxx
83/139
Doc ID 6996 Rev 5
10.6 USB INTERFACE (USB)
10.6.1 Introduction
The USB Interface implements a low-speed func-
tion interface between the USB and the ST7 mi-
crocontroller. It is a highly integrated circuit which
includes the transceiver, 3.3 voltage regulator, SIE
and DMA. No external components are needed
apart from the external pull-up on USBDM for low
speed recognition by the USB host. The use of
DMA architecture allows the endpoint definition to
be completely flexible. Endpoints can be config-
ured by software as in or out.
10.6.2 Main Features
USB Specification Version 1.1 Compliant
Supports Low-Speed USB Protocol
Two or Three Endpoints (including default one)
depending on the device (see device feature list
and register map)
CRC
generation/checking,
NRZI
encoding/
decoding and bit-stuffing
USB Suspend/Resume operations
DMA Data transfers
On-Chip 3.3V Regulator
On-Chip USB Transceiver
10.6.3 Functional Description
The block diagram in Figure 50, gives an overview
of the USB interface hardware.
For general information on the USB, refer to the
“Universal Serial Bus Specifications” document
available at http//:www.usb.org.
Serial Interface Engine
The SIE (Serial Interface Engine) interfaces with
the USB, via the transceiver.
The SIE processes tokens, handles data transmis-
sion/reception, and handshaking as required by
the USB standard. It also performs frame format-
ting, including CRC generation and checking.
Endpoints
The Endpoint registers indicate if the microcon-
troller is ready to transmit/receive, and how many
bytes need to be transmitted.
DMA
When a token for a valid Endpoint is recognized by
the USB interface, the related data transfer takes
place, using DMA. At the end of the transaction, an
interrupt is generated.
Interrupts
By reading the Interrupt Status register, applica-
tion software can know which USB event has oc-
curred.
Figure 50. USB Block Diagram
CPU
MEMORY
Transceiver
3.3V
Voltage
Regulator
SIE
ENDPOINT
DMA
INTERRUPT
Address,
and interrupts
USBDM
USBDP
USBVCC
6 MHz
REGISTERS
data buses
USBGND
相关PDF资料
PDF描述
ST72F621J4B1 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP42
ST72621K4B1 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP32
ST72P324BJ6TA/XXXRE 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
ST72P324BK6TA/XXXRE 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP32
ST72F324BK2TCRS 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
相关代理商/技术参数
参数描述
ST72F623F2M1 功能描述:8位微控制器 -MCU Flash 8K No Interfce RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F623F2M1TR 功能描述:8位微控制器 -MCU LO SPD USB 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F63BD6U1 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F63BD6U1TR 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F63BE1M1 功能描述:8位微控制器 -MCU ST7263B Lo SPD USB 8B MCU FAMILY RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT