參數(shù)資料
型號(hào)： PCF8583
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： XO, clock
英文描述： Clock/calendar with 240×8-bit RAM(帶240×8位RAM的時(shí)鐘/日歷)
中文描述： REAL TIME CLOCK
文件頁(yè)數(shù)： 21/28頁(yè)
文件大小： 162K
代理商： PCF8583
1997 Jul 15
21
Philips Semiconductors
Product specification
Clock/calendar with 240
×
8-bit RAM
PCF8583
Fig.21 I
2
C-bus timing diagram; rise and fall times refer to V
IL
and V
IH
.
handbook, full pagewidth
PROTOCOL
SCL
SDA
MBD820
BIT 0
LSB
(R/W)
tHD;STA
tSU;DAT
tHD;DAT
tVD;DAT
tSU;STO
tf
r
t
tBUF
tSU;STA
tLOW
tHIGH
1 / fSCL
START
CONDITION
(S)
BIT 7
MSB
(A7)
BIT 6
(A6)
ACKNOWLEDGE
(A)
STOP
CONDITION
(P)
14 APPLICATION INFORMATION
14.1
Quartz frequency adjustment
14.1.1
M
ETHOD
1:
FIXED OSCI CAPACITOR
By evaluating the average capacitance necessary for the
application layout a fixed capacitor can be used.
The frequency is best measured via the 1 Hz signal
available after power-on at the interrupt output (pin 7).
The frequency tolerance depends on the quartz crystal
tolerance, the capacitor tolerance and the
device-to-device tolerance (on average
±
5
×
10
6
).
Average deviations of
±
5 minutes per year can be
achieved.
14.1.2
M
ETHOD
2: OSCI T
RIMMER
Using the alarm function (via the I
2
C-bus) a signal faster
than 1 Hz can be generated at the interrupt output for fast
setting of a trimmer.
Procedure:
Power-on
Initialization (alarm functions).
Routine:
Set clock to time T and set alarm to time T
+
dT
At time T
+
dT (interrupt) repeat routine.
14.1.3
M
ETHOD
3:
Direct measurement of OSC out (accounting for test probe
capacitance).
The PCF8583 slave address has a fixed combination 1010
as group 1.
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參數(shù)描述
PCF8583BS 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Clock and calendar with 240 x 8-bit RAM
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PCF8583BS-T 功能描述:實(shí)時(shí)時(shí)鐘 CLOCK CALENDAR W 256X8SRAM I2C 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
PCF8583P 制造商:NXP Semiconductors 功能描述:Clock/Calendar/Alarm/Timer/Interrupt Serial (2-Wire, I2C) 制造商:NXP Semiconductors 功能描述:IC CLOCK CALENDAR/SRAM 8583 DIP8 制造商:NXP Semiconductors 功能描述:IC, CLOCK CALENDAR/SRAM, 8583, DIP8 制造商:NXP Semiconductors 功能描述:Clock/calendar with 2408-bit RAM
PCF8583P/F5 制造商:NXP Semiconductors 功能描述:Real Time Clock Serial 240Byte 8-Pin PDIP Tube
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