參數(shù)資料
型號(hào): DS2417X/T&R
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 8/15頁(yè)
文件大?。?/td> 0K
描述: IC TIMECHIP W/INTRPT 1WIRE CSP
標(biāo)準(zhǔn)包裝: 10,000
類型: 二進(jìn)制計(jì)數(shù)器
特點(diǎn): 唯一 ID
時(shí)間格式: 二進(jìn)制
數(shù)據(jù)格式: 二進(jìn)制
接口: 1 線 串行
電源電壓: 2.5 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 6-XBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 6-覆晶(2.82x2.54)
包裝: 帶卷 (TR)
DS2417
OVERVIEW
The DS2417 has two main data components: 1) 64-bit lasered ROM, and 2) real-time clock counter
(Figure 1). The real-time clock utilizes an on-chip oscillator that is connected to an external 32.768kHz
crystal. The hierarchical structure of the 1-Wire protocol is shown in Figure 2. The bus master must first
provide one of four ROM function commands: 1) Read ROM, 2) Match ROM, 3) Search ROM, 4) Skip
ROM. The protocol for these ROM functions is described in Figure 7. After a ROM function command
is successfully executed, the real-time clock functions become accessible and the master may then
provide one of the real-time clock function commands. The protocol for these commands is described in
Figure 5. All data is read and written least significant bit first.
DETAILED PIN DESCRIPTION
PIN
SYMBOL DESCRIPTION
1
GND
Ground Pin
2
1-Wire
Data input/output Open drain.
3
INT
Interrupt pin Open drain.
4
VDD
Power input pin. 2.5V to 5.5V.
5, 6
X1, X2
Crystal pins. Connections for a standard 32.768kHz quartz crystal, EPSON part
number C-002RX or C-004R (be sure to request 6pF load capacitance).
NOTE: X1 and X2 are very high impedance nodes. It is recommended that they
and the crystal be guard-ringed with ground and that high frequency signals be
kept away from the crystal area. See Figure 10 and Application Note 58 for de-
tails.
BLOCK DIAGRAM Figure 1
INT
2 of 15
X1
X2
32.768 kHz
OSC./DIVIDER
ROM
CONTROL
FUNCTION
64-BIT
LASERED
1-WIRE
ROM
CLOCK
FUNCTION
CONTROL
RTC COUNTER (32-BIT)
OSCILLATOR
CONTROL
READ/WRITE BUFFER
INT. GENERATOR
INT\
VDD
1 Hz
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