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110901
FEATURES
§
Real-time clock (RTC)
Counts seconds, minutes, hours, date,
month, day of the week, and year with
leap-year compensation valid up to 2100
Power control circuitry supports system
power-on from day/time alarm
§
Microprocessor monitor
Halts microprocessor during power-fail
Automatically restarts microprocessor
after power failure
Monitors pushbutton for external
override
Halts and resets an out of control
microprocessor
§
NV RAM control
Automatic battery backup and write
protection to external SRAM
§
1.25V threshold detector for power-fail
warning
§
10-bit analog-to-digital converter (ADC)
Monotonic with no missing codes
§
Four-wire analog resistive touch-screen
interface
ORDERING INFORMATION
DS1680FP-3
3.3V Operation
DS1680FP-5
5.0V Operation
DESCRIPTION
The DS1680 incorporates many functions necessary for low-power portable products, providing an RTC,
NV RAM controller, microprocessor monitor, power-fail warning, 10-bit ADC, and a touch-screen
controller in one chip.
The RTC provides seconds, minutes, hours, day, date, month, and year information with leap-year
compensation as well as an alarm interrupt. This interrupt works when the DS1680 is powered by the
system power supply or when in battery-backup operation, so the alarm can be used to wake up a system
that is powered down.
PIN ASSIGNMENT
DS1680
Portable System Controller
with Touch-Screen Control
www.maxim-ic.com
44-Pin MQFP (10 x 10 x 2mm)
PFI
GND
D7
D6
C
33
34
NEW_DATA
P
V
BAT
X1
I
22
23
11
12
144
V
C
C
S
V
C
R
C
I
S
D0
D1
D2
D3
D4
D5
O
P
X
Y
V
R
A
Y
A
A
A
X
PD_RESET
PEN_SELECT
ANSELIN
CONVERT
OUT_SELECT
COEN
BHE
AVG
X2
Package dimension information can be found at:
相關(guān)PDF資料 |
PDF描述 |
DS1747-DS1747P |
Y2K-Compliant, Nonvolatile Timekeeping RAMs |
DS1747 |
Y2K-Compliant, Nonvolatile Timekeeping RAMs |
DS1747-70 |
Y2K-Compliant, Nonvolatile Timekeeping RAMs |
DS1747-70IND |
Y2K-Compliant, Nonvolatile Timekeeping RAMs |
DS1747P |
Y2K-Compliant, Nonvolatile Timekeeping RAMs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
DS1680FP-3 |
制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Portable System Controller with Touch-Screen Control |
DS1680FP-5 |
功能描述:實(shí)時(shí)時(shí)鐘
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 |
DS1682 |
制造商:Maxim Integrated Products 功能描述: |
DS1682_13 |
制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Total-Elapsed-Time Recorder with Alarm |
DS1682S |
功能描述:實(shí)時(shí)時(shí)鐘 Total-Elapsed-Time Recorder w/Alarm 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 |