2 PROM. X25329 Datasheet

X25329 Datasheet PDF, Equivalent


Part Number

X25329

Description

V CC Supervisory Circuit w/Serial E 2 PROM

Manufacture

Xicor

Total Page 16 Pages
PDF Download
Download X25329 Datasheet


X25329 Datasheet
64K
X25648/49,
8K x 8 Bit
32K
X25328/29,
4K x 8 Bit
16K
X25168/69
2K x 8 Bit
VCC Supervisory Circuit w/Serial E2PROM
FEATURES
DESCRIPTION
• Low Vcc Detection and Reset Assertion
—Reset Signal Valid to Vcc=1V
• Save Critical Data With Block LockTM Protection
—Block LockTM Protect 0, 1/4, 1/2 or all of
Serial E2PROM Memory Array
• In Circuit Programmable ROM Mode
• Long Battery Life With Low Power Consumption
—<1µA Max Standby Current
—<5mA Max Active Current during Write
—<400µA Max Active Current during Read
• 1.8V to 3.6V, 2.7V to 5.5V and 4.5V to 5.5V Power
Supply Operation
• 2MHz Clock Rate
• Minimize Programming Time
—32 Byte Page Write Mode
—Self-Timed Write Cycle
—5ms Write Cycle Time (Typical)
• SPI Modes (0,0 & 1,1)
• Built-in Inadvertent Write Protection
—Power-Up/Power-Down Protection Circuitry
—Write Enable Latch
—Write Protect Pin
• High Reliability
• Available Packages
—14-Lead SOIC (X2564X)
—14-Lead TSSOP (X2532X, X2516X)
—8-Lead SOIC (X2532X, X2516X)
These devices combines two popular functions, Supply
Voltage Supervision and Serial E2PROM Memory in one
package. This combination lowers system cost, reduces
board space requirements, and increases reliability.
The user’s system is protected from low voltage condi-
tions by the devices low Vcc detection circuitry. When
Vcc falls below the minimum Vcc trip point, the system is
reset. RESET/RESET is asserted until Vcc returns to
proper operating levels and stabilizes.
The memory portion of the device is a CMOS Serial
E2PROM array with Xicor’s Block LockTM Protection. The
array is internally organized as x 8. The device features a
Serial Peripheral Interface (SPI) and software protocol
allowing operation on a simple four-wire bus.
The device utilizes Xicor’s proprietary Direct WriteTM cell,
providing a minimum endurance of 100,000 cycles per
sector and a minimum data retention of 100 years.
BLOCK DIAGRAM
SI
SO
SCK
CS
RESET/RESET
DATA
REGISTER
COMMAND
DECODE &
CONTROL
LOGIC
RESET
CONTROL
X - DECODE
LOGIC
STATUS
REGISTER
PAGE DECODE LOGIC
32 8
SERIAL
E2PROM
ARRAY
VCC
LOW
VOLTAGE
SENSE
PROGRAMMING,
WP BLOCK LOCK &
ICP ROM CONTROL
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
7032 -1.1 6/17/97 T1/C0/D0 SH
1
HIGH
VOLTAGE
CONTROL
7036 FRM 01
Characteristics subject to change without notice

X25329 Datasheet
X25648/49, X25328/29, X25168/69
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 a 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)
When CS is HIGH, the device is deselected and the SO
output pin is at high impedance and unless a nonvolatile
write cycle is underway, the device will be in the standby
power mode. CS LOW enables the device, placing it in
the active power mode. It should be noted that after
power-up, a HIGH to LOW transition on CS is required
prior to the start of any operation.
Write Protect (WP)
When WP is low and the nonvolatile bit WPEN is “1”,
nonvolatile writes to the device Status Register are
disabled, but the part otherwise functions normally. When
WP is held high, all functions, including nonvolatile writes
to the Status Register operate normally. If an internal
Status Register Write Cycle has already been initiated,
WP going low while WPEN is a “1” will have no effect on
this write. Subsequent write attempts to the Status
Register under these conditions will be disabled.
The WP pin function is blocked when the WPEN bit in the
Status Register is “0”. This allows the user to install the
device in a system with WP pin grounded and still be able
to program the Status Register. The WP pin functions will
be enabled when the WPEN bit is set to a “1”.
Reset (RESET/RESET)
RESET/RESET is an active LOW/HIGH, open drain out-
put which goes active whenever Vcc falls below the mini-
mum Vcc sense level. It will remain active until Vcc rises
above the minimum Vcc sense level for 200ms.
PIN CONFIGURATION
NC
CS
CS
SO
WP
VSS
NC
14-LEAD SOIC
1 14
2 13
3 12
X25648/49
4 11
5 10
69
78
NC
V CC
V CC
RESET/RESET
SCK
SI
NC
CS
SO
WP
VSS
8-LEAD SOIC
18
2 X25328/29 7
X25168/69
36
45
V CC
RESET/RESET
SCK
SI
14-LEAD TSSOP
CS
SO
NC
NC
NC
WP
VSS
1 14
2 13
3 X25328/29 12
4 X25168/69 11
5 10
69
78
V CC
RESET/RESET
NC
NC
NC
SCK
SI
7036 FRM 02
PIN NAMES
Symbol
Description
CS Chip Select Input
SO Serial Output
SI Serial Input
SCK
WP
Serial Clock Input
Program Protect Input
VSS
VCC
RESET/RESET
Ground
Supply Voltage
Reset Output
7036 FRM T01
2


Features Datasheet pdf 64K 32K 16K FEATURES X25648/49, X25328/ 29, X25168/69 VCC Supervisory Circuit w /Serial E2PROM DESCRIPTION 8K x 8 Bit 4K x 8 Bit 2K x 8 Bit • Low Vcc Dete ction and Reset Assertion —Reset Sign al Valid to Vcc=1V • Save Critical Da ta With Block LockTM Protection —Bloc k LockTM Protect 0, 1/4, 1/2 or all of Serial E2PROM Memory Array • In Circu it Programmable ROM Mode • Long Batte ry Life With Low Power Consumption —< 1µA Max Standby Current —<5mA Max Ac tive Current during Write —<400µA Ma x Active Current during Read • 1.8V t o 3.6V, 2.7V to 5.5V and 4.5V to 5.5V P ower Supply Operation • 2MHz Clock Ra te • Minimize Programming Time —32 Byte Page Write Mode —Self-Timed Writ e Cycle —5ms Write Cycle Time (Typica l) • SPI Modes (0,0 & 1,1) • Built- in Inadvertent Write Protection —Powe r-Up/Power-Down Protection Circuitry Write Enable Latch —Write Protect Pi n • High Reliability • Available Pa ckages —14-Lead SOIC (X2564X) —14-Lead TSSOP (X2532X, X2516X) —8-Lead SOIC (X2532X, X2516X) BLOCK DIAGRAM SI .
Keywords X25329, datasheet, pdf, Xicor, V, CC, Supervisory, Circuit, w/Serial, E, 2, PROM, 25329, 5329, 329, X2532, X253, X25, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)