PCF8583P/F5,112 NXP Semiconductors, PCF8583P/F5,112 Datasheet - Page 5

IC CLK/CALENDAR 240X8 RAM 8-DIP

PCF8583P/F5,112

Manufacturer Part Number
PCF8583P/F5,112
Description
IC CLK/CALENDAR 240X8 RAM 8-DIP
Manufacturer
NXP Semiconductors
Type
Clock/Calendar/NVSRAMr
Datasheet

Specifications of PCF8583P/F5,112

Package / Case
8-DIP (0.300", 7.62mm)
Memory Size
240B
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD
Interface
I²C, 2-Wire Serial
Voltage - Supply
1 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
568-1084-5
935261345112
PCF8583PN

Available stocks

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Part Number
Manufacturer
Quantity
Price
Part Number:
PCF8583P/F5,112
Manufacturer:
LTC
Quantity:
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Part Number:
PCF8583P/F5,112
Manufacturer:
NXP
Quantity:
1 688
NXP Semiconductors
7. Functional description
PCF8583
Product data sheet
7.1 Counter function modes
7.2 Alarm function modes
The PCF8583 contains a 256 by 8 bit RAM with an 8 bit auto-increment address register,
an on-chip 32.768 kHz oscillator circuit, a frequency divider, a serial two-line bidirectional
I
The first 16 bytes of the RAM (memory addresses 00h to 0Fh) are designed as
addressable 8 bit parallel special function registers. The first register (memory
address 00h) is used as a control and status register. The memory addresses 01h to 07h
are used as counters for the clock function. The memory addresses 08h to 0Fh may be
programmed as alarm registers or used as free RAM locations, when the alarm is
disabled.
When the control and status register is programmed, a 32.768 kHz clock mode, a 50 Hz
clock mode or an event-counter mode can be selected.
In the clock modes the hundredths of a second, seconds, minutes, hours, date, month
(four year calendar) and weekday are stored in a Binary Coded Decimal (BCD) format.
The timer register stores up to 99 days. The event counter mode is used to count pulses
applied to the oscillator input (OSCO left open-circuit). The event counter stores up to 6
digits of data.
When one of the counters is read (memory locations 01h to 07h), the contents of all
counters are strobed into capture latches at the beginning of a read cycle. Therefore,
faulty reading of the counter during a carry condition is prevented.
When a counter is written, other counters are not affected.
By setting the alarm enable bit of the control and status register the alarm control register
(address 08h) is activated.
By setting the alarm control register, a dated alarm, a daily alarm, a weekday alarm, or a
timer alarm may be programmed. In the clock modes, the timer register (address 07h)
may be programmed to count hundredths of a second, seconds, minutes, hours, or days.
Days are counted when an alarm is not programmed.
Whenever an alarm event occurs the alarm flag of the control and status register is set. A
timer alarm event will set the alarm flag and an overflow condition of the timer will set the
timer flag. The open-drain interrupt output is switched on (active LOW) when the alarm or
timer flag is set (enabled). The flags remain set until directly reset by a write operation.
When the alarm is disabled (bit 2 of control and status register set logic 0) the alarm
registers at addresses 08h to 0Fh may be used as free RAM.
2
C-bus interface, and a Power-On Reset (POR) circuit.
All information provided in this document is subject to legal disclaimers.
Rev. 06 — 6 October 2010
Clock and calendar with 240 x 8-bit RAM
PCF8583
© NXP B.V. 2010. All rights reserved.
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