規格
| 屬性 | 價值 |
| Supplier | Analog Devices Inc./Maxim Integrated |
| Package / Case | Tape & Reel (TR) |
| Part Status | Obsolete |
| Type | Clock/Calendar |
| Features | Alarm, Leap Year, Square Wave Output |
| Time Format | HH:MM:SS (12/24 hr) |
| Date Format | YY-MM-DD-dd |
| Interface | I²C, 2-Wire Serial |
| Voltage - Supply | 1.8V ~ 5.5V |
| Current - Timekeeping(Max) | 0.6µA @ 1.3V ~ 1.8V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
概述
Description
The DS1337S+T&R is a low-power I²C real-time clock (RTC) from Maxim Integrated (now part of Analog Devices). It provides timekeeping with seconds, minutes, hours, day, date, month, and year data, including leap-year compensation up to 2100.
Key features:
- I²C interface (up to 400kHz)
- Battery backup support for continuous timekeeping
- Programmable alarms and square-wave output
- Ultra-low power consumption (~500nA in battery mode)
- Industrial temperature range (-40°C to +85°C)
The "T&R" suffix indicates tape-and-reel packaging for automated assembly.
Ideal for embedded systems, IoT devices, and battery-powered applications requiring accurate timekeeping.
Key features:
- I²C interface (up to 400kHz)
- Battery backup support for continuous timekeeping
- Programmable alarms and square-wave output
- Ultra-low power consumption (~500nA in battery mode)
- Industrial temperature range (-40°C to +85°C)
The "T&R" suffix indicates tape-and-reel packaging for automated assembly.
Ideal for embedded systems, IoT devices, and battery-powered applications requiring accurate timekeeping.
Equivalent
Equivalent products to the DS1337S+T&R (I²C RTC chip) include:
- DS3231 (higher accuracy, integrated crystal)
- PCF8563 (NXP, low power)
- MCP7940N (Microchip, battery backup)
- RX-8900SA (Epson, ultra-low power)
These alternatives offer similar I²C interfaces and RTC functionality. Choose based on accuracy, power needs, or additional features.
- DS3231 (higher accuracy, integrated crystal)
- PCF8563 (NXP, low power)
- MCP7940N (Microchip, battery backup)
- RX-8900SA (Epson, ultra-low power)
These alternatives offer similar I²C interfaces and RTC functionality. Choose based on accuracy, power needs, or additional features.
Pinout
The DS1337S+T&R is an I²C real-time clock (RTC) with 8 pins in an SOIC package.
Key functions:
- I²C interface (SDA, SCL) for communication.
- Timekeeping (seconds, minutes, hours, day, date, month, year).
- Alarm with interrupt output.
- Battery backup support for power loss protection.
- Programmable square-wave output.
Pinout (simplified):
1. VCC – Power supply
2. GND – Ground
3. SQW/INT – Square wave output or interrupt
4. SCL – I²C clock
5. SDA – I²C data
6. VBAT – Battery backup input
7. NC – No connect
8. NC – No connect
Compact and efficient for embedded systems requiring timekeeping.
Key functions:
- I²C interface (SDA, SCL) for communication.
- Timekeeping (seconds, minutes, hours, day, date, month, year).
- Alarm with interrupt output.
- Battery backup support for power loss protection.
- Programmable square-wave output.
Pinout (simplified):
1. VCC – Power supply
2. GND – Ground
3. SQW/INT – Square wave output or interrupt
4. SCL – I²C clock
5. SDA – I²C data
6. VBAT – Battery backup input
7. NC – No connect
8. NC – No connect
Compact and efficient for embedded systems requiring timekeeping.
