参数资料
| 型号： | CDP68HC68T1M2 |
| 厂商： | Intersil |
| 文件页数： | 10/23页 |
| 文件大小： | 0K |
| 描述： | IC RTC 32X8 NVSRAM CMOS 16-SOIC |
| 标准包装： | 48 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，方波输出，监视计时器 |
| 存储容量： | 32B |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | SPI |
| 电源电压： | 3 V ~ 6 V |
| 电压 - 电源，电池： | 2.2 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1236 (CN2011-ZH PDF) |
18
FN1547.8
October 29, 2007
NOTE: Example of a system in which the power is controlled by an external source. The LINE input pin can sense when the switch opens by use
of the POWER-SENSE INTERRUPT. The CDP68HC68T1 crystal drives the clock input to the CPU using the CLK OUT pin. On power down when
VSYS < VBATT + 1.0V. VBATT will power the CDP68HC68T1. A threshold detect activates a P-Channel switch, connecting VBATT to VDD. VBATT
always supplies power to the oscillator, keeping voltage frequency variation to a minimum.
FIGURE 17. EXTERNALLY CONTROLLED POWER SYSTEM DIAGRAM
A Procedure for Power-Down Operation might consist of the following:
1. Set power sense operation by writing Bit 5 high in the Interrupt Control Register.
2. When an interrupt occurs, the CPU reads the Status Register to determine the interrupt source.
3. Sensing a power failure, the CPU does the necessary housekeeping to prepare for shutdown.
4. The CPU reads the Status Register again after several milliseconds to determine validity of power failure.
5. The CPU sets power-down Bit 6 and disables all interrupts in the Interrupt Control Register when power down is verified.
This causes the CPU reset and clock out to be held low and disconnects the serial interface.
6. When power returns and VSYS rises above VBATT, power-down is terminated. The CPU reset is released and serial
communication is established.
System Diagrams (Continued)
POR
VDD
VSYS
LINE
CDP68HC68T1
CE
CPUR
MISO
MOSI
SCK
VBATT
CLK OUT
INT
VDD
CDP68HC05C8B
PORT (e.g., PCO)
RESET
MISO
MOSI
SCK
OSC 1
IRQ
BRIDGE
GENERATOR
AC
LINE
VDD
CDP68HC68T1
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相关代理商/技术参数 |
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| CDP68HC68T1M296 | 功能描述:实时时钟 PERIPH SPIAL-TIME- CLK 16W INDEL RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| CDP68HC68T1M296S2357 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CDP68HC68T1M2Z | 功能描述:实时时钟 PERI SPIAL-TIME-CLK RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| CDP68HC68T1M2Z96 | 功能描述:实时时钟 PERI SPIAL-TIME-CLK RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| CDP68HC68T1M96 | 功能描述:实时时钟 PERIPH SPIAL-TIME- CLK 20W INDEL RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
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