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參數(shù)資料
| 型號： | PCF8593 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | XO, clock |
| 英文描述： | Low power clock/calendar(低功耗時(shí)鐘/日歷) |
| 中文描述： | REAL TIME CLOCK |
| 文件頁數(shù)： | 11/28頁 |
| 文件大小： | 197K |
| 代理商： | PCF8593 |
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1997 Mar 25
11
Philips Semiconductors
Product specification
Low power clock/calendar
PCF8593
Fig.9 Selection of alarm weekdays.
handbook, full pagewidth
7
6
5
4
3
2
1
0
MSB
LSB
MBD816
memory location 0E (alarm weekday/month)
weekday 0 enabled when set
weekday 1 enabled when set
weekday 2 enabled when set
weekday 3 enabled when set
weekday 4 enabled when set
weekday 5 enabled when set
weekday 6 enabled when set
not used
7.7
Timer
The timer (location 07) is enabled by setting the
control/status register = XX0X X1XX. The timer counts up
from 0 (or a programmed value) to 99. On overflow, the
timer resets to 0. The timer flag (LSB of control/status
register) is set on overflow of the timer. This flag must be
reset by software. The inverted value of this flag can be
transferred to the external interrupt by setting bit 3 of the
alarm control register.
Additionally, a timer alarm can be programmed by setting
the timer alarm enable (bit 6 of the alarm control register).
When the value of the timer equals a pre-programmed
value in the alarm timer register (location 0F), the alarm
flag is set (bit 1 of the control/status register). The inverted
value of the alarm flag can be transferred to the external
interrupt by enabling the alarm interrupt (bit 6 of the alarm
control register).
Resolution of the timer is programmed via the 3 LSBs of
the alarm control register (see Fig.11, Alarm and timer
Interrupt logic diagram).
7.8
Event counter mode
Event counter mode is selected by bits 4 and 5 which are
logic 1, 0 in the control/status register. The event counter
mode is used to count pulses externally applied to the
oscillator input (OSCO left open-circuit). The event counter
stores up to 6 digits of data, which are stored as
6 hexadecimal values located in locations 1, 2, and 3.
Thus, up to 1 million events may be recorded.
An event counter alarm occurs when the event counter
registers match the value programmed in locations 9, A,
and B, and the event alarm is enabled (bits 4 and 5 which
are logic 0, 1 in the alarm control register). In this event,
the alarm flag (bit 1 of the control/status register) is set.
The inverted value of this flag can be transferred to the
interrupt pin (pin 7) by setting the alarm interrupt enable in
the alarm control register. In this mode, the timer
(location 07) increments once for every one, one-hundred,
ten thousand, or 1 million events, depending on the value
programmed in bits 0,1 and 2 of the alarm control register.
In all other events, the timer functions are as in the clock
mode.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF8593P | 制造商:NXP Semiconductors 功能描述:Clock/Calendar/Alarm/Timer/Interrupt Serial (I2C) Bulk 制造商:NXP Semiconductors 功能描述:IC RTC/CALENDAR 8593 DIP8 制造商:NXP Semiconductors 功能描述:IC, RTC/CALENDAR, 8593, DIP8 制造商:NXP Semiconductors 功能描述:IC, RTC/CALENDAR, 8593, DIP8; Date Format:DD:MM:YYYY; Clock Format:HH:MM:SS; Clock IC Type:Clock, Calendar; Supply Voltage Min:1V; Supply Voltage Max:6V; Digital IC Case Style:DIP; No. of Pins:8; Interface Type:I2C; Operating ;RoHS Compliant: Yes |
| PCF8593P,112 | 功能描述:實(shí)時(shí)時(shí)鐘 CLOCK/CALENDAR LOW PWR 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 |
| PCF8593P112 | 制造商:NXP Semiconductors 功能描述:IC RTC YY-MM-DD-dd DIP-8 制造商:NXP Semiconductors 功能描述:IC RTC/CALENDAR 8593 DIP8 |
| PCF8593T | 制造商:PHILIPS-SEMI 功能描述: 制造商:NXP Semiconductors 功能描述:Real Time Clock, 8 Pin, Plastic, SOP |
| PCF8593T/1 | 制造商:NXP Semiconductors 功能描述:Real Time Clock, 8 Pin, Plastic, SOP |
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