参数资料
型号: uPSD3212CV
厂商: 意法半导体
英文描述: Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM(带8032微控制器内核和16Kbit SRAM的FLASH可编程系统器件)
中文描述: 闪存可编程系统设备与8032微控制器内核和16Kbit的SRAM(带8032微控制器内核和16Kbit SRAM的的闪存可编程系统器件)
文件页数: 47/151页
文件大小: 1194K
代理商: UPSD3212CV
47/151
uPSD3212C, uPSD3212CV
SUPERVISORY
There are four ways to invoke a reset and initialize
the uPSD321X Devices.
Via the external RESET pin
Via the internal LVR Block.
Via Watch Dog timer
The RESET mechanism is illustrated in Figure 19.
Each RESET source will cause an internal reset
signal active. The CPU responds by executing an
internal reset and puts the internal registers in a
defined state. This internal reset is also routed as
an active low reset input to the PSD Module.
External Reset
The RESET pin is connected to a Schmitt trigger
for noise reduction. A RESET is accomplished by
holding the RESET pin LOW for at least 1ms at
power up while the oscillator is running. Refer to
AC spec on other RESET timing requirements.
Low V
DD
Voltage Reset
An internal reset is generated by the LVR circuit
when the V
DD
drops below the reset threshold. Af-
ter V
DD
reaching back up to the reset threshold,
the RESET signal will remain asserted for 10ms
before it is released. On initial power-up the LVR
is enabled (default). After power-up the LVR can
be disabled via the LVREN Bit in the PCON Reg-
ister.
Note:
The LVR logic is still functional in both the
Idle and Power-down Modes.
The reset threshold:
5V operation: 4V +/- 0.25V
3.3V operation: 2.5V +/-0.2V
This logic supports approximately 0.1V of hystere-
sis and 1μs noise-cancelling delay.
Watchdog Timer Overflow
The Watchdog Timer generates an internal reset
when its 22-bit counter overflows. See Watchdog
Timer section for details.
Figure 19. RESET Configuration
AI07429
Reset
CPU
&
PERI.
Noise
Cancel
LVR
S
Q
R
CPU
Clock
Sync
10ms
Timer
WDT
PSD_RST
Active Low
10ms at 40Mhz
50ms at 8Mhz
相关PDF资料
PDF描述
uPSD3212 Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可编程系统器件)
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相关代理商/技术参数
参数描述
UPSD3212CV-24T1T 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM
UPSD3212CV-24T6 功能描述:8位微控制器 -MCU 3.0V 512K 24MHz 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
UPSD3212CV-24T6T 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic
UPSD3212CV-24U1T 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM
UPSD3212CV-24U6 功能描述:8位微控制器 -MCU 3.0V 512K 24MHz 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