Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

X25170 Datasheet(PDF) 2 Page - IC MICROSYSTEMS

Part No. X25170
Description  SPI Serial E 2 PROM with Block Lock Protection
Download  15 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ICMIC [IC MICROSYSTEMS]
Homepage  http://www.icmic.com
Logo 

X25170 Datasheet(HTML) 2 Page - IC MICROSYSTEMS

 
Zoom Inzoom in Zoom Outzoom out
 2 / 15 page
background image
X25170
Characteristics subject to change without notice.
2 of 15
PIN DESCRIPTIONS
Serial Output (SO)
SO is a push/pull serial data output pin. During a read
cycle, data is shifted out on this pin. Data is clocked out
by the falling edge of the serial clock.
Serial Input (SI)
SI is the serial data input pin. All opcodes, byte
addresses, and data to be written to the memory are
input on this pin. Data is latched by the rising edge of
the serial clock.
Serial Clock (SCK)
The Serial Clock controls the serial bus timing for data
input and output. Opcodes, addresses, or data present
on the SI pin are latched on the rising edge of the clock
input, while data on the SO pin change after the falling
edge of the clock input.
Chip Select (CS)
It should be noted that after power-up, a HIGH to LOW
transition on CS is required prior to the start of any
operation.
When CS is HIGH, the X25170 is deselected and the
SO output pin is at high impedance; unless an internal
write operation is underway, the X25170 will be in the
standby power mode. CS LOW enables the X25170,
placing it in the active power mode.
Write Protect (WP)
When WP is LOW and the nonvolatile bit WPEN is “1”,
nonvolatile writes to the X25170 status register are dis-
abled, but the part otherwise functions normally. When
WP is held HIGH, all functions, including nonvolatile
writes operate normally. WP going LOW while CS is
still LOW will interrupt a write to the X25170 status reg-
ister. If the internal write cycle has already been initi-
ated, WP going LOW will have no effect on a write.
The WP pin function is blocked when the WPEN bit in
the status register is “0”. This allows the user to install
the X25170 in a system with WP pin grounded and still
be able to write to the status register. The WP pin func-
tions will be enabled when the WPEN bit is set “1”.
Pin Names
PIN CONFIGURATION
HOLD (HOLD)
HOLD is used in conjunction with the CS pin to select
the device. Once the part is selected and a serial
sequence is underway, HOLD may be used to pause
the serial communication with the controller without
resetting the serial sequence. To pause, HOLD must
be brought LOW while SCK is LOW. To resume com-
munication, HOLD is brought HIGH, again while SCK
is LOW. If the pause feature is not used, HOLD should
be held HIGH at all times.
Symbol
Description
CS
Chip Select Input
SO
Serial Output
SI
Serial Input
SCK
Serial Clock Input
WP
Write Protect Input
VSS
Ground
VCC
Supply Voltage
HOLD
Hold Input
NC
No Connect
TSSOP
NC
1
2
3
4
7
6
5
X25170
VSS
NC
NC
NC
NC
8
9
10
11
12
14
13
NC
DIP/SOIC
VCC
HOLD
SCK
CS
1
2
3
4
6
7
8
X25170
VSS
SI
5
SO
WP
CS
SO
WP
VCC
HOLD
SCK
SI


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn