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参数资料
型号： SAX-XC878CM-13FFI5V
厂商： INFINEON TECHNOLOGIES AG
元件分类： 微控制器/微处理器
英文描述： 8-BIT, FLASH, 24 MHz, RISC MICROCONTROLLER, PQFP64
封装： PLASTIC, TQFP-64
文件页数： 117/141页
文件大小： 2385K
代理商： SAX-XC878CM-13FFI5V
XC878CLM
Functional Description
Data Sheet
70
V1.1, 2009-08
3.7
Reset Control
The XC878 has five types of reset: power-on reset, hardware reset, watchdog timer
reset, power-down wake-up reset, and brownout reset.
When the XC878 is first powered up, the status of certain pins (see Table 24) must be
defined to ensure proper start operation of the device. At the end of a reset sequence,
the sampled values are latched to select the desired boot option, which cannot be
modified until the next power-on reset or hardware reset. This guarantees stable
conditions during the normal operation of the device.
The second type of reset in XC878 is the hardware reset. This reset function can be used
during normal operation or when the chip is in power-down mode. A reset input pin
RESET is provided for the hardware reset.
The Watchdog Timer (WDT) module is also capable of resetting the device if it detects
a malfunction in the system.
Another type of reset that needs to be detected is a reset while the device is in
power-down mode (wake-up reset). While the contents of the static RAM are undefined
after a power-on reset, they are well defined after a wake-up reset from power-down
mode.
3.7.1
Module Reset Behavior
Table 23 lists the functions of the XC878 and the various reset types that affect these
functions. The symbol “■” signifies that the particular function is reset to its default state.
Table 23
Effect of Reset on Device Functions
Module/
Function
Wake-Up
Reset
Watchdog
Reset
Hardware
Reset
Power-On
Reset
Brownout
Reset
CPU Core
■■■■■
Peripherals
■■■■■
On-Chip
Static RAM
Not affected,
Reliable
Not affected,
Reliable
Not affected,
Reliable
Affected, un-
reliable
Affected, un-
reliable
Oscillator,
PLL
■
Not affected ■■■
Port Pins
■■■■■
EVR
The voltage
regulator is
switched on
Not affected Not affected ■■
FLASH
■■■■■
NMI
Disabled
■■■
相关PDF资料
PDF描述
SAX-XC878M-16FFI3V3 8-BIT, FLASH, 24 MHz, RISC MICROCONTROLLER, PQFP64
SAX-XC878M-16FFI5V 8-BIT, FLASH, 24 MHz, RISC MICROCONTROLLER, PQFP64
SAX-XC878M-13FFI5V 8-BIT, FLASH, 24 MHz, RISC MICROCONTROLLER, PQFP64
SAX-XC878-16FFA3V3 RISC MICROCONTROLLER, PQFP64
SB80486DX2SC50 32-BIT, 50 MHz, RISC PROCESSOR, PQFP208
相关代理商/技术参数
参数描述
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SAX-XC878CM-16FFA5V 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit Single-Chip Microcontroller
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SAX-XC878L-13FFA 5V AA 功能描述:IC MCU 8BIT FLASH 64-LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:XC8xx 标准包装:1,900 系列:XC8xx 核心处理器:XC800 芯体尺寸:8-位 速度:27MHz 连通性:CAN，SPI，SSI，UART/USART 外围设备:欠压检测/复位，POR，PWM，WDT 输入/输出数:40 程序存储器容量:52KB（52K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:3.25K x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:64-LQFP 包装:带卷 (TR)
SAX-XC878L-13FFA5VAA 功能描述:8位微控制器 -MCU 8 BIT FLASH 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
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