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参数资料
| 型号： | ST7SCR1R4T1 |
| 厂商： | 意法半导体 |
| 英文描述： | Enclosures; External Depth:18.50"; External Height:47.312"; External Width:22"; Panel Width:19.00"; Enclosure Color:Royal Blue; Enclosure Material:Steel; Panel Space:42.00" RoHS Compliant: Yes |
| 中文描述： | 8位低功耗，全速USB微控制器与16K的闪存，768内存，智能卡的I /楼，计时器 |
| 文件页数： | 100/102页 |
| 文件大小： | 1413K |
| 代理商： | ST7SCR1R4T1 |
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ERRATA SHEET
100/102
This limitation will be corrected in the next silicon revision. In the new revision, when a SETUP
token is received, the value loaded in the internal counter is fixed to 8 by hardware independ-
ently of the value in the CNT0RXR register.
20.3 USB BUFFER SHARED MEMORY ACCESS
Description
When f
CPU
is at 4 MHz, a value written in the USB buffer may be corrupted when V
DD
is less
than 4.4V. This limitation will be corrected in the next silicon revision.
Impact
USB buffer access cannot be guaranteed over the full V
DD
range when f
CPU
is at 4 MHz.
20.4 WDG (WATCHDOG) LIMITATIONS
In flash devices, the WDG prescaler value is not 65536 as described in
Section 12.1.3 on
page 40
(
Figure 25
), it is actually 16.
This will be corrected in the next revision of the silicon.
20.5 SUPPLY CURRENT IN HALT MODE (SUSPEND) LIMITATIONS
The current consumption (I
DD
) in some devices may exceed the maximum specified in the
documentation (up to 1mA).
Workaround
Declare 200mA max. power value in the USB Configuration Descriptor.
20.5.1 V
PP
Pin Limitation
In the impacted flash devices, contrary to the datasheet specification (which specifies that it
must be tied to V
SS
), the V
PP
pin must be tied to V
DD
in operating mode. This will be fixed in
the next silicon revision .
20.6 START-UP
The ST7SCR relies on internal LVD and it may not start-up correctly if the power supply is
slow.
Workaround
Put a 1M
resistor between V
DD
and V
SS
to eliminate the offset on V
DD
that may cause this
power-on problem.
相关PDF资料 |
PDF描述 |
|---|---|
| ST7PSCR1R4T1 | 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER |
| ST7FSCR1R4T1 | 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER |
| ST72SCR1R4T1 | 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER |
| ST72FSCR1R4T1 | 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER |
| ST72PSCR1R4T1 | 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ST7SCRDIE | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ST7SCR - 8-BIT LOW-POWER. FULL-SPEED USB MCU WITH 16K FLASH. 768 RAM. SMARTCARD I/F. TIMER (DATA BRIEFING) |
| ST7-STICK | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Low Cost, In-Circuit Programmer for ST7 |
| ST7-STICK/US | 功能描述:程序设计器 - 基于处理器 ST7 In-Circuit Comm RoHS:否 制造商:Olimex Ltd. 产品:Programmers 工具用于评估:XMEGA, MegaAVR, tinyAVR 核心:AVR 接口类型:USB 工作电源电压:1.8 V to 5.5 V |
| ST7-STICK45 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI |
| ST7SUPERLITE | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI |
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