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PCF8593T/1,118

Name: PCF8593T/1,118
Rating: 4.7 (12 reviews)

IC RTC CLK/CALENDAR I2C 8-SOIC

製造商
製造商。部分 #PCF8593T/1,118
包 8-SOIC (0.154, 3.90mm Width)
資料表 PCF8593T/1,118 DataSheet
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規格

Supplier	NXP USA Inc.,Rochester Electronics, LLC
Package	Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus	Active
Type	Clock/Calendar
Features	Alarm, NVSRAM
MemorySize	8B
TimeFormat	HH:MM:SS:hh (12/24 hr)
DateFormat	YY-MM-DD-dd
Interface	I²C, 2-Wire Serial
Voltage-Supply	2.5V ~ 6V
Current-Timekeeping(Max)	8µA ~ 15µA @ 2V ~ 5V
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	8-SOIC (0.154, 3.90mm Width)

概述

Description

The PCF8593T is a CMOS I2C real-time clock/calendar (RTC) chip. It keeps accurate time using an external 32.768 kHz crystal and reports the current time and date over the I2C bus. Key features typically include seconds, minutes, hours, day/date, month/year with leap-year handling, and support for 12/24-hour formats. It supports battery backup (VBAT) so time is preserved when main power is removed. Data is read/written via I2C registers (often in BCD/binary formats), and some variants provide alarm or interrupt outputs. The device generally operates from about 2.0 to 5.5 V and is offered in compact packages suitable for microcontroller-based designs. Applications: digital clocks, data loggers, metering, wearables, and any system requiring persistent timekeeping across power cycles.

Features

Concise features of PCF8593T/1,118:
- I2C-bus real-time clock/calendar
- Time/date registers: seconds, minutes, hours, day, date, month, year (leap-year aware)
- 32.768 kHz crystal oscillator input for timekeeping
- Battery-backup operation to retain time when main supply is off
- Alarm and timer functionality
- Programmable square-wave output
- I2C interface (standard/fast mode)
- Wide supply range (typical 2.5–5.5 V)
- 8-pin package (compact, low power)
Note: exact I2C address, alarm specifics, and available square-wave frequencies may vary by revision/packaging.

Package

PCF8593T/1,118 is supplied in an 8‑pin SO (SOIC) surface‑mount package (SO8).

Pinout

The PCF8593T/1,118 is an 8‑pin I²C real‑time clock/calendar IC. Pin count: 8. Primary pin functions: VDD (power supply), VSS (ground), SDA (I²C data), SCL (I²C clock), X1 (32.768 kHz crystal input), X2 (crystal output). The remaining pins are package/no‑connect or manufacturer test pins depending on the specific package variant.

Manufacturer

The PCF8593T/1,118 is manufactured by NXP Semiconductors (originally marketed under Philips Semiconductors as Philips). NXP is a Netherlands‑based global semiconductor company that designs and manufactures integrated circuits and system solutions for automotive, industrial, mobile and IoT applications (microcontrollers, connectivity, security, RF and mixed‑signal products).

Application

PCF8593T/1,118 is a low‑power I2C real‑time clock/calendar with battery backup. Typical applications:
- Time stamping and scheduling in microcontroller systems
- Data loggers and sensor/metering equipment
- Digital clocks, alarms, and timers in consumer electronics
- Home appliances and energy metering
- Automotive and industrial control systems
- IoT and portable devices needing reliable timekeeping

Equivalent

Close functional equivalents: NXP PCF8563, Maxim DS1307, Maxim DS3231, Microchip MCP7940N / MCP79410. Note: these RTCs differ in register maps, I²C addresses, pinouts and accuracy (DS3231 is temp‑compensated). Verify datasheets for drop‑in compatibility before replacing.