- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378652 > LS7166 (LSI Corporation) 24-BIT QUADRATURE COUNTER PDF資料下載
參數(shù)資料
| 型號(hào)： | LS7166 |
| 廠商： | LSI Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | 24-BIT QUADRATURE COUNTER |
| 中文描述： | 24位正交計(jì)數(shù)器 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 79K |
| 代理商： | LS7166 |
24-BIT QUADRATURE COUNTER
FEATURES:
Programmable modes are: Up/Down,
Binary, BCD, 24 Hour Clock, Divide-by-N,
x1 or x2 or x4 Quadrature and Single Cycle.
DC to 20 MHz Count Frequency.
8-Bit I/O Bus for Microprocessor
Communication and Control.
24-Bit comparator for pre-set count
comparison.
Readable status register.
Input/Output TTL and CMOS compatible.
5 Volt operation (Vdd - Vss).
LS7166 (DIP); LS7166-S (SOIC);
LS7166-TS24 (24-Pin TSSOP)
*
- See Fig. 1
GENERAL DESCRIPTION:
The LS7166 is a CMOS, 24-bit counter that
can be programmed to operate in several dif-
ferent modes. The operating mode is set up
by writing control words into internal control
registers (see Figure 8). There are three 6-bit
and one 2-bit control registers for setting up
the circuit functional characteristics. In addi-
tion to the control registers, there is a 5-bit out-
put status register (OSR) that indicates the cur-
rent counter status. The IC communicates with
external circuits through an 8-bit three state I/O
bus. Control and data words are written into
the LS7166 through the bus. In addition to the
I/O bus, there are a number of discrete inputs
and outputs to facilitate instantaneous hard-
ware
based
control
stantaneous status indication.
functions
and
in-
REGISTER DESCRIPTION:
Internal hardware registers are accessible
through the I/O bus (D0 - D7) for READ or
WRITE when CS = 0. The C/D input selects
between the control registers (C/D = 1) and the
data registers (C/D = 0) during a READ or
WRITE operation. (See Table 1)
The information included herein is believed to be
accurate and reliable. However, LSI Computer Systems,
Inc. assumes no responsibilities for inaccuracies, nor for
any infringements of patent rights of others which may
result from its use.
(Write Input) WR
(Chip Select Input) CS
(Load Counter/Load Latch) LCTR/LLTC
(A, B Gate/Reset Counter)ABGT/RCTR
V
DD
(+5V)
(Count Input) A
(Count Input) B
D0
D1
D2
V
SS
(GND)
RD (Read Input)
C/D (Control/ Data Input)
BW (Borrow Output)
CY (Carry Output)
D7
D6
D5
D4
D3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
L
L
December 2002
FIGURE 1
7166-120902-1
LSI/CSI
LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405
UL
LS7166
A3800
20-Pin Package PIN ASSIGNMENT - Top View
*
(Contact factory for 24-Pin TSSOP Package Pinout)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LS7183 | QUADRATURE CLOCK CONVERTER |
| LS7184 | QUADRATURE CLOCK CONVERTER |
| LS7210 | PROGRAMMABLE DIGITAL DELAY TIMER |
| LS7211 | PROGRAMMABLE DIGITAL DELAY TIMER |
| LS7212 | PROGRAMMABLE DIGITAL DELAY TIMER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LS7166 | 制造商:LSI COMPUTER SYSTEMS 功能描述:24BIT MULTI MODE COUNTER 7166 DIP |
| LS7166_06 | 制造商:LSI 制造商全稱:LSI 功能描述:24-BIT QUADRATURE COUNTER |
| LS7166-DIP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| LS7166S | 制造商:LSI Corporation 功能描述: |
| LS7166-SOIC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ENCODER INTERFACE|CMOS|SOP|20PIN|PLASTIC |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。