參數(shù)資料
型號(hào): STK17CA8-W45I
元件分類: 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: REAL TIME CLOCK, PDIP40
封裝: 0.600 INCH, DIP-40
文件頁(yè)數(shù): 12/22頁(yè)
文件大?。?/td> 579K
代理商: STK17CA8-W45I
STK17CA8
June 2003
2
Document Control # ML0023 rev 0.2
PACKAGES
PIN DESCRIPTIONS
Pin Name
I/O
Description
A0 - A16
Input
Address: The 17 address inputs select one of 131,072 bytes in the
nvSRAM array or one of 16 bytes in the clock register map.
DQ0 -DQ7
I/O
Data: Bi-directional 8-bit data bus for accessing the nvSRAM array and
clock.
E
Input
Chip Enable: The active low E input selects the device.
W
Input
Write Enable: The active low W enables data on the DQ pins to be
written to the adddress location latched by the falling edge of E.
G
Input
Output Enable: The active low G input enables the data output buffers
during read cycles. Deasserting G high causes the DQ pins to tri-state.
X1, X2
Input
Crystal: Connections for 32.768 kHz crystal.
Vrtccap
Power Supply
Capacitor supplied backup RTC supply voltage.
Vrtcbat
Power Supply
Battery supplied backup RTC supply voltage.
VCCX
Power Supply
Power (+ 3V)
HSB
I/O
Hardware Store Busy (I/O)
INT
Output
Interrupt Output: Can be programmed to respond to the clock alarm,
the watchdog timer and the power monitor. Programmable to either
active high (push/pull) or active low (open-drain).
VCAP
Power Supply
Autostore Capacitor: Supplies power to nvSRAM during power loss to
store data from SRAM to nonvolatile elements.
VSS
Power Supply
Ground
48 Pin 300 mil SSOP
40 Pin 600 mil DIP
(not to scale)
相關(guān)PDF資料
PDF描述
STK17T88-RF45TR PROGRAMMABLE TIMER, PDSO48
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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STK17T88-RF25I 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問(wèn)時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube
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