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参数资料
| 型号： | RS5C321B-E1 |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封装： | 0.65 MM PITCH, SSOP-8 |
| 文件页数： | 29/33页 |
| 文件大小： | 286K |
| 代理商： | RS5C321B-E1 |
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URTRA-COMPACT ALARM REAL TIME
CLOCK WITH 32.768kHz
1
RS5C321A/B
OUTLINE
The RS5C321A/B is a CMOS type real-time clock which is connected to the CPU via three signal lines and capa-
ble of serial transmission of clock and calendar data to the CPU.
The RS5C321A/B can generate 32.768kHz clock pulse controled by register. Driving an oscillation circuit at con-
stant voltage, the circuit presents less fluctuations in frequency and current consumption thank to its minimal volt-
age fluctuations consequently realizes low current consumption (0.6A at 3V). It also provides an oscillator halt
sensing function for application to data validity at power-on and other occasions. Integrated into an ultra compact
and ultra thin 8pin SSOP (0.65mm pitch), the RS5C321A/B is the optimum choice for equipment requiring small
size and low power consumption.
The RS5C321A and the RS5C321B reads/writes data at falling and rising edge of serial clock respectively.
Time keeping voltage 1.6V to 6.0V
Lowest supply current 0.6A TYP. (1.5A MAX.) at 3V
Connection to the CPU via only three pins: CE, SCLK/SCLK and SIO for addressing and data read/write
A clock counter (counting hours, minutes, and seconds) and a calendar counter (counting leap years, years,
months, days, and days of the week) in BCD code
32.768kHz clock pulse controled by register.
Oscillator halt sensing to judge internal data validity
Second digit adjustment by ±30 seconds
12-hour or 24-hour time display selectable
Automatic leap year recognition up to the year 2099
CMOS logic
Package: 8pin SSOP (0.65mm pitch)
FEATURES
相关PDF资料 |
PDF描述 |
|---|---|
| RS5C321B-E2 | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| RS5C372A-E2 | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| RT6224K-125 | 64-BIT, 125 MHz, RISC PROCESSOR, XMA100 |
| RT6224K-90 | 64-BIT, 90 MHz, RISC PROCESSOR, XMA100 |
| RT6224K-55 | 64-BIT, 55 MHz, RISC PROCESSOR, XMA100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RS5C338A | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| RS5C338A-E2 | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| RS5C348A | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE |
| RS5C348A-E2 | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:Real-Time Clock |
| RS5C348B | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE |
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