參數(shù)資料
型號(hào)： PCA8565
廠商： NXP Semiconductors N.V.
英文描述： Real time clock/calender
中文描述： 實(shí)時(shí)時(shí)鐘/ calender
文件頁(yè)數(shù)： 3/26頁(yè)
文件大小： 581K
代理商： PCA8565
Philips Semiconductors
PCA8565
Real time clock/calender
Product data
Rev. 01 — 31 March 2003
3 of 26
9397 750 10695
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
7.2 Pin description
8.
Functional description
The PCA8565 contains sixteen 8-bit registers with an auto-incrementing address
register, an on-chip 32.768 kHz oscillator with one integrated capacitor, a frequency
divider which provides the source clock for the Real Time Clock/calender (RTC), a
programmable clock output, a timer, an alarm, a voltage-low detector and a 400 kHz
I
2
C-bus interface.
All 16 registers are designed as addressable 8-bit parallel registers although not all
bits are implemented. The first two registers (memory address 00H and 01H) are
used as control and/or status registers. The memory addresses 02H through 08H are
used as counters for the clock function (seconds up to years counters). Address
locations 09H through 0CH contain alarm registers which define the conditions for an
alarm. Address 0DH controls the CLKOUT output frequency. 0EH and 0FH are the
timer control and timer registers, respectively.
The seconds, minutes, hours, days, weekdays, months, years as well as the minute
alarm, hour alarm, day alarm and weekday alarm registers are all coded in BCD
format.
When one of the RTC registers is read the contents of all counters are frozen.
Therefore, faulty reading of the clock/calendar during a carry condition is prevented.
Fig 3.
Device diode protection diagram.
MCE169
SDA
4
5
VSS
SCL
3
6
INT
CLKOUT
2
7
OSCO
VDD
1
8
OSCI
PCA8565
Table 3:
Symbol
OSCI
OSCO
INT
V
SS
SDA
SCL
CLKOUT
V
DD
Pin description
Pin
1
2
3
4
5
6
7
8
Description
oscillator input
oscillator output
interrupt output (open-drain; active LOW)
ground
serial data I/O
serial clock input
clock output, open-drain
positive supply voltage
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PDF描述
PCA8581C 128 x 8-bit EEPROM with I2C-bus interface
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA8565BS 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Real time clock/calendar
PCA8565BS/1,118 功能描述:實(shí)時(shí)時(shí)鐘 AUTOMOTIVE CLOCK/CAL RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
PCA8565BS/1-T 功能描述:實(shí)時(shí)時(shí)鐘 AUTOMOTIVE CLOCK/CAL RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
PCA8565TS 制造商:PHIL 功能描述:
PCA8565TS/1,118 功能描述:實(shí)時(shí)時(shí)鐘 CMOS RTC/CALENDAR RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
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