Product Summary

The PCF8583T is a clock/calendar circuit based on a 2048-bit static CMOS RAM organized as 256 words by 8 bits. Addresses and data are transferred serially via the two-line bidirectional I2C-bus. The built-in word address register is incremented automatically after each written or read data byte. Address pin A0 is used for programming the hardware address, allowing the connection of two devices to the bus without additional hardware.

Parametrics

Absolute maximum ratings: (1)VDD, supply voltage (pin 8): -0.8 to +7.0 V; (2)IDD, supply current (pin 8): 50 mA max; (3)ISS, supply current (pin 4): 50 mA max; (4)VI, input voltage: -0.8 to VDD + 0.8 V; (5)II, DC input current: 10 mA max; (6)IO, DC output current: 10 mA max; (7)Ptot, total power dissipation per package: 300 mW max; (8)PO, power dissipation per output: 50 mW max; (9)Tamb, operating ambient temperature: -40 to +85 ℃; (10)Tstg, storage temperature: -65 to +150 ℃.

Features

Features: (1)I2C-bus interface operating supply voltage: 2.5 V to 6 V; (2)Clock operating supply voltage (0 to +70 ℃): 1.0 V to 6.0 V; (3)240 × 8-bit low-voltage RAM; (4)Data retention voltage: 1.0 V to 6 V; (5)Operating current (at fSCL = 0 Hz): max. 50 mA; (6)Clock function with four year calendar; (7)Universal timer with alarm and overflow indication; (8)24 or 12 hour format; (9)32.768 kHz or 50 Hz time base; (10)Serial input/output bus (I2C); (11)Automatic word address incrementing; (12)Programmable alarm, timer and interrupt function.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
PCF8583T
PCF8583T
Other

Data Sheet
Negotiable 
PCF8583T/5,512
PCF8583T/5,512
NXP Semiconductors
Real Time Clock CLOCK CALENDAR W
Data Sheet
0-1900: $0.78
1900-3000: $0.75
3000-6000: $0.72
PCF8583T/5,518
PCF8583T/5,518
NXP Semiconductors
Real Time Clock CLK/CALENDAR 240X8 RAM
Data Sheet
0-1: $1.61
1-25: $1.44
25-100: $1.30
100-250: $1.15
PCF8583TD
PCF8583TD
NXP Semiconductors
Real Time Clock CLOCK CALENDAR W 256X8SRAM I2C
Data Sheet
Negotiable