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參數資料
| 型號： | PCA8565 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Real time clock/calender |
| 中文描述： | 實時時鐘/ calender |
| 文件頁數： | 6/26頁 |
| 文件大小： | 581K |
| 代理商： | PCA8565 |
Philips Semiconductors
PCA8565
Real time clock/calender
Product data
Rev. 01 — 31 March 2003
6 of 26
9397 750 10695
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
8.6.1
Control/status 1 register
8.6.2
Control/status 2 register
Bits TF and AF: When an alarm occurs, AF is set to 1. Similarly, at the end of a timer
countdown, TF is set to 1. These bits maintain their value until overwritten by
software. If both timer and alarm interrupts are required in the application, the source
of the interrupt can be determined by reading these bits. To prevent one flag being
overwritten while clearing another a logic AND is performed during a write access.
Bits TIE and AIE: These bits activate or deactivate the generation of an interrupt
when TF or AF is asserted, respectively. The interrupt is the logical OR of these two
conditions when both AIE and TIE are set.
Table 6:
Bit
7
Control/status 1 (address 00H) bits description
Symbol
Value
TEST1
0
1
0
STOP
0
1
Description
Normal mode
EXT_CLK test mode
default value is logic 0
RTC source clock runs
all RTC divider chain flip-flops are asynchronously set to logic 0; the RTC clock is
stopped (CLKOUT at 32.768 kHz is still available)
default value is logic 0
Power-on reset override facility is disabled; set to logic 0 for normal operation
Power-on reset override may be enabled
default value is logic 0
6
5
4
3
0
TESTC
0
1
2 to 0
0
Table 7:
Bit
7 to 5
4
Control/status 2 (address 01H) bits description
Symbol
Value
0
TI/TP
0
1
Description
default value is logic 0
INT is active when TF is active (subject to the status of TIE)
INT pulses active according to
Table 8
(subject to the status of TIE); note that if
AF and AIE are active then INT will be permanently active
alarm flag inactive
alarm flag active
alarm flag is cleared
alarm flag remains unchanged
timer flag inactive
timer flag active
timer flag is cleared
timer flag remains unchanged
alarm interrupt disabled
alarm interrupt enabled
timer interrupt disabled
timer interrupt enabled
3
AF
0 (read)
1 (read)
0 (write)
1 (write)
0 (read)
1 (read)
0 (write)
1 (write)
0
1
0
1
2
TF
1
AIE
0
TIE
相關PDF資料 |
PDF描述 |
|---|---|
| PCA8581C | 128 x 8-bit EEPROM with I2C-bus interface |
| PCA8581CP | 128 x 8-bit EEPROM with I2C-bus interface |
| PCA8581CT | 128 x 8-bit EEPROM with I2C-bus interface |
| PCA8581P | 128 x 8-bit EEPROM with I2C-bus interface |
| PCA8581T | 128 x 8-bit EEPROM with I2C-bus interface |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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:實時時鐘 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 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| PCA8565BS/1-T | 功能描述:實時時鐘 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 時間格式:HH:MM:SS RTC 存儲容量: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:實時時鐘 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 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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