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參數(shù)資料
| 型號： | ZSB1050 |
| 廠商： | ZiLOG, Inc. |
| 英文描述： | One-Time Programmble 555 Timer(一次性可編程定時器) |
| 中文描述： | 一次性可編程555定時器（一次性可編程定時器） |
| 文件頁數(shù)： | 1/3頁 |
| 文件大小： | 125K |
| 代理商： | ZSB1050 |
ZiLOG W
T
ELEPHONE
ORLDWIDE
: 408.558.8500 F
H
EADQUARTERS
910 E. H
: 408.558.8300 I
AMILTON
A
VENUE
C
HTTP
AMPBELL
://
WWW
, CA 95008
ZILOG
.
COM
AX
NTERNET
:
.
1
P
RODUCT
B
LOCK
D
IAGRAM
F
EATURES
￥
Highly-Integrated Mixed-Signal Solution
￥
User-ConTguarable Timer
￥
OTP-Programmable
￥
Improved Accuracy
￥
Industry-Standard 8-Pin Package
G
ENERAL
D
ESCRIPTION
The ZSBI050 is a programmable replacement for
the widely-available 555 timer and the discrete
components normally required for its operation.
The ZSBI050 timer is designed for applications
which would otherwise use the industry-standard
555 timer, but could take advantage of its ability to
be programmed in-circuit. The timer features on-
chip programmable memory to store timing param-
eters, and replaces the external trimming resistor
that requires manual tuning on traditional timers.
The ZSBI050 may be programmed by a micropro-
cessor or by automated test equipment. ZiLOGs
ZSBI050 is the Trst programmable timer device to
feature built-in calibration, enabling products to
include automated test and calibration.
Through a bidirectional serial port, the customer
can set the ZSBI050 to operate as a variable-duty-
cycle oscillator or a monostable multivibrator with
speciTed delays. The delay intervals can range
from milliseconds to over 44 days, giving OEM
engineers maximum exibility.
The ZSBI050 is available in 8-pin DIP or SOIC
packages, ideal for applications with minimum
board space requirements.
I
The ZSBI050 delivers exibility, high reliability,
and reduced manufacturing time, and it offers pre-
cise timing of the delay cycle or frequencies stored
in memory. The new in-circuit programming elimi-
nates the need for manual calibration.
MPROVEMENT
ON
THE
555 T
IMER
Additionally, the potentiometer and timing capaci-
tor are eliminated, due to the users ability to pro-
gram automatically through the serial interface.
U
The ZSBI050 offers the exibility to conTgure the
device to the customers speciTcations. The fre-
quency, timing pulse, duty cycle and triggering
modes are all adjustable, thus providing superior
performance.
SER
-C
ONFIGURABLE
User-conTgurable monostable and astable modes
are easily selected through the external program-
ming port, with the astable mode enabling addi-
tional triggering controls not supported by other
555 timers.
OTP-P
The ZSBI050 is controlled by 35 bits of nonvola-
tile memory. These bits are shifted into an internal
holding register, which acts like the non-volatile
memory during calibration and testing. Once the
program characteristics have been determined, the
date is burned into the internal memory. An
optional security bit is provided to lock the device
from being further modiTed.
ROGRAMMABLE
The ZSBI050 offers an increase in accuracy over
the traditional 555 timer. While operating in the
variable duty cycle oscillator mode, the timer can
operate with a precision of up to 0.1%. Overall, the
ZSBI050 offers an increase of 5D7% accuracy over
traditional 555 timers.
Band-Gap Voltage Source
Mode Control Logic
OTP Memory
Counter/Timer
ZSBI050
O
NE
-T
IME
P
555 T
IMER
ROGRAMMABLE
PB001900-SEC1099
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