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RS5C348A中文资料
RS5C348A数据手册规格书PDF详情
OUTLINE
The Rx5C348A/B are CMOS real-time clock ICs connected to the CPU by four signal lines, CE, SCLK, SI, SO, and configured to perform serial transmission of time and calendar data to the CPU. The periodic interrupt circuit is configured to generate interrupt signals with six selectable interrupts ranging from 0.5 seconds to 1 month. The 2 alarm interrupt circuits generate interrupt signals at preset times. As the oscillation circuit is driven under constant voltage, fluctuation of the oscillator frequency due to supply voltage is small, and the time keeping current is small (TYP. 0.35?A at 3V: Rx5C348A, TYP.0.55?A at 3V: Rx5C348B). The oscillation halt sensing circuit can be used to judge the validity of internal data in such events as power-on; The supply voltage monitoring circuit is configured to record a drop in supply voltage below two selectable supply voltage monitoring threshold settings. The 32.768kHz clock output function (N-channel open drain output) is intended to output sub-clock pulses for the external microcomputer. The 32-kHz clock circuit can be disabled by certain register settings for the Rx5C348A but cannot be disabled by any register settings for the Rx5C348B. The oscillation adjustment circuit is intended to adjust time counts with high precision by correcting deviations in the oscillation frequency of the crystal oscillator. These models come in an ultra-compact SSOP10 (RS5C348A/B), SSOP10G (RV5C348A/B), TSSOP10G (RT5C348B)
FEATURES
● Timekeeping supply voltage ranging from 1.45 to 5.5V
● Low power consumption
Rx5C348A: 0.35?A TYP (0.8?A MAX) at VDD=3V
Rx5C348B: 0.55?A TYP (1.0?A MAX) at VDD=3V
● Only four signal lines (CE, SCLK, SI, and SO) required for connection to the CPU.
● Maximum clock frequency of 2 MHz (with VDD = 5V)
● Time counters (counting hours, minutes, and seconds) and calendar counters
(counting years, months, days, and weeks) (in BCD format)
● Interrupt circuit configured to generate interrupt signals
(with interrupts ranging from 0.5 seconds to 1 month)
to the CPU and provided with an interrupt flag and an interrupt halt
● 2 alarm interrupt circuits
(Alarm_W for week, hour, and minute alarm settings and Alarm_D
for hour and minute alarm settings)
● 32-kHz clock output circuit (Nch. open drain output)
● The Rx5C348A is designed to disable 32-kHz clock output in response to a command
from the host computer and the Rx5C348B is designed to keep 32-kHz output enabled.
● Oscillation halt sensing circuit which can be used to judge the validity of internal data
● Supply voltage monitoring circuit with two supply voltage monitoring threshold settings
● Automatic identification of leap years up to the year 2099
● Selectable 12-hour and 24-hour mode settings
● Built-in oscillation stabilization capacitors (CG and CD)
● High precision oscillation adjustment circuit
● Ultra-compact SSOP10 (RS5C348A/B), SSOP10G (RV5C348A/B), TSSOP10G (RT5C348B)
● CMOS process
RS5C348A产品属性
- 类型
描述
- 型号
RS5C348A
- 制造商
RICOH
- 制造商全称
RICOH electronics devices division
- 功能描述
4-WIRE SERIAL INTERFACE
RS5C348A供应商...
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
中天科工半导体(深圳)有限公司 |
RS5C348A-E2-F |
RICOH Electronic Devices Co., |
24+ |
10-LFSOP(0.173,4.40mm 宽) |
25000 |
in stock时钟/计时IC-原装 |
|
深圳市欧立现代科技有限公司 |
RS5C348A |
RICOH |
24+ |
SOJ-10 |
6868 |
原装现货,可开13%税票 |
|
深圳市科恒伟业电子有限公司 |
RS5C348A |
RICOH |
1738+ |
TSSOP10 |
8529 |
科恒伟业!只做原装正品,假一赔十! |
|
深圳市华来深电子有限公司 |
RS5C348A |
RICOH |
23+ |
TSSOP10 |
8650 |
受权代理!全新原装现货特价热卖! |
|
深圳市纳艾斯科技有限公司 |
RS5C348A |
RICOH |
2020+ |
TSSOP10 |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
|
深圳市澳亿芯电子科技有限公司 |
RS5C348A |
RICOH |
1709+ |
TSSOP10 |
45000 |
普通 |
|
深圳市芯诚实创科技有限公司 |
RS5C348A |
RICOH |
2022 |
TSSOP |
1000 |
||
深圳市赛美科科技有限公司 |
RS5C348A |
RICOH |
SSOP10 |
68500 |
一级代理 原装正品假一罚十价格优势长期供货 |
||
深圳市能元时代电子有限公司 |
RS5C348A |
RICOH |
23+ |
TSSOP10 |
12800 |
##公司主营品牌长期供应100%原装现货可含税提供技术 |
|
深圳市安富世纪电子有限公司 |
RS5C348A |
RICOH |
23+ |
TSSOP10 |
8000 |
只做原装现货 |
RS5C348A 资料下载更多...
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RICOH electronics devices division 理光集团
RICOH Electronics Devices Division 是日本理光公司(Ricoh Company, Ltd.)的一部分,专注于开发和制造高性能的电子元件和设备。该部门主要产品包括半导体、传感器、及其他电子组件,广泛应用于办公设备、工业自动化、汽车电子、医疗设备以及消费电子等行业。 理光电子设备部以其创新的技术和高品质的产品而闻名,致力于提供可靠的电子解决方案,满足全球客户的多样化需求。部门内的研发团队不断推动技术进步,专注于能效、集成度和小型化等领域,力求在快速发展的市场中维持竞争力。与此同时,RICOH Electronics Devices Division 还特别注重可持