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PDF CAT25C33 Data sheet ( Hoja de datos )
| Número de pieza | CAT25C33 | |
| Descripción | 2K/4K/8K/16K/32K SPI Serial CMOS E2PROM | |
| Fabricantes | Catalyst Semiconductor | |
| Logotipo |  |
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Advanced
CAT25C03/05/09/17/33
2K/4K/8K/16K/32K SPI Serial CMOS E2PROM
FEATURES
s 10 MHz SPI Compatible
s 1.8 to 6.0 Volt Operation
s Hardware and Software Protection
s Zero Standby Current
s Low Power CMOS Technology
s SPI Modes (0,0 &1,1)
s Commercial, Industrial and Automotive
Temperature Ranges
DESCRIPTION
s 1,000,000 Program/Erase Cycles
s 100 Year Data Retention
s Self-Timed Write Cycle
s 8-Pin DIP/SOIC, 16-Pin SOIC and 14-Pin TSSOP
s Page Write Buffer
s Write Protection
– Protect First Page, Last Page, Any 1/4 Array
or Lower 1/2 Array
The CAT25C03/05/09/17/33 is a 2K/4K/8K/16K/32K-Bit
SPI Serial CMOS E2PROM internally organized as
256x8/512x8/1024x8/2048x8/4096x8 bits. Catalyst’s
advanced CMOS Technology substantially reduces de-
vice power requirements. The CAT25C03/05 features a
16-byte page write buffer. The 25C09/17/33 features a
32-byte page write buffer.The device operates via the
SPI bus serial interface and is enabled though a Chip
Select (CS). In addition to the Chip Select, the clock
PIN CONFIGURATION
input (SCK), data in (SI) and data out (SO) are required
to access the device. The HOLD pin may be used to
suspend any serial communication without resetting the
serial sequence. The CAT25C03/05/09/17/33 is de-
signed with software and hardware write protection
features. The device is available in 8-pin DIP, 8-pin
SOIC, 16-pin SOIC, 8-pin TSSOP and 14-pin TSSOP
packages.
TSSOP Package (U14) SOIC Package (S16) SOIC Package (S) DIP Package (P)
TSSOP Package (U)
CS 1
SO 2
NC 3
NC 4
NC 5
WP 6
VSS 7
14 VCC
13 HOLD
12 NC
11 NC
10 NC
9 SCK
8 SI
CS 1
SO 2
NC 3
NC 4
NC 5
NC 6
WP 7
VSS 8
16 VCC
CS 1
15 HOLD SO 2
14 NC
WP 3
13 NC
VSS 4
12 NC
11 NC
10 SCK
9 SI
8 VCC CS 1
7 HOLD SO 2
6 SCK WP 3
5 SI VSS 4
8 VCC CS 1
7 HOLD SO 2
6 SCK WP 3
5 SI VSS 4
8
7
6
5
BLOCK DIAGRAM
SENSE AMPS
SHIFT REGISTERS
VCC
HOLD
SCL
SI
PIN FUNCTIONS
Pin Name
Function
SO Serial Data Output
SCK
WP
Serial Clock
Write Protect
VCC +1.8V to +6.0V Power Supply
VSS Ground
CS Chip Select
SI
HOLD
Serial Data Input
Suspends Serial Input
NC No Connect
© 1998 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
SO
SI
CS
WP
HOLD
SCK
1
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
I/O
CONTROL
SPI
CONTROL
LOGIC
BLOCK
PROTECT
LOGIC
STATUS
REGISTER
XDEC
E2PROM
ARRAY
DATA IN
STORAGE
HIGH VOLTAGE/
TIMING CONTROL
25C128 F02
Doc. No. 25068-00 2/98
1 page  
Advanced
CAT25C03/05/09/17/33
brought low while SCK is low. The SO pin is in a high
impedance state during the time the part is paused, and
transitions on the SI pins will be ignored. To resume
communication, HOLD is brought high, while SCK is low.
(HOLD should be held high any time this function is not
being used.) HOLD may be tied high directly to VCC or
tied to VCC through a resistor. Figure 9 illustrates hold
timing sequence.
STATUS REGISTER
7654
0000
MEMORY PROTECTION
IDL2
0
0
0
0
1
1
1
1
IDL1
0
0
1
1
0
0
1
1
IDL0
0
1
0
1
0
1
0
1
Non-Protection
Q1 Protected
Q2 Protected
Q3 Protected
Q4 Protected
H1 Protected
P0 Protected
Pn Protected
STATUS REGISTER
The status register defines the protection status of the
device. The register features three protection bits which
allow the user to protect the desirable part of the memory
array. There are seven different variations for the protec-
tion mechanism. The protection can vary from one page
to as much as half of the entire array. These areas and
associated address ranges are protected by configuring
the protection bits of the status register through WRSR
instruction. Once the three protection bits are set, the
associated memory can be read but not written until the
protection bits are reset.
3210
0
IDL2
IDL1
IDL0
25C03 25C05 25C09 25C17 25C33
Q1 00-3F 000-07F 000-0FF 000-1FF 000-3FF
Q2 40-7F 080-0FF 100-1FF 200-3FF 400-7FF
Q3 80-BF 100-17F 200-2FF 400-5FF 800-BFF
Q4 C0-FF 180-1FF 300-3FF 600-7FF C00-FFF
H1 00-7F 000-0FF 000-1FF 000-3FF 000-7FF
P0 00-0F 000-00F 000-01F 000-01F 000-01F
Pn F0-FF 1F0-1FF 3E0-3FF 7E0-7FF FE0-FFF
5 Doc. No. 25068-00 2/98
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet CAT25C33.PDF ] | |
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