cat93c5612pi-45te13 Catalyst Semiconductor, cat93c5612pi-45te13 Datasheet

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cat93c5612pi-45te13

Manufacturer Part Number
cat93c5612pi-45te13
Description
Supervisory Circuits With Microwire Serial Cmos E2prom, Precision Reset Controller Watchdog Timer
Manufacturer
Catalyst Semiconductor
Datasheet
PIN FUNCTIONS
Note: When the ORG pin is connected to VCC, the X16 organiza
© 1998 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Advanced Information
CAT93CXXXX (1K-16K)
Supervisory Circuits with Microwire Serial CMOS E 2 PROM, Precision Reset Controller and Watchdog Timer
FEATURES
DESCRIPTION
The CAT93CXXXX is a single chip solution to three
popular functions of EEPROM memory, precision reset
controller and watchdog timer. The serial EEPROM
memory of the 93CXXXX can be configured either by 16-
bits or by 8-bits. Each register can be written (or read)
by using the DI (or DO pin).
The reset function of the 93CXXXX protects the system
PIN CONFIGURATION
RESET/RESET
DO
CS
SK
DI
Watchdog Timer
Programmable Reset Threshold
Built-in Inadvertent Write Protection
—V
High Speed Operation: 3MHz
Low Power CMOS Technology
x 16 or x 8 Selectable Serial Memory
Self-Timed Write Cycle with Auto-Clear
Sequential Read
Fast Nonvolatile Write Cycle: 3ms Max
Pin Name
93CX61X
ORG
tion is selected. When it is connected to ground, the X8 pin
is selected. If the ORG pin is left unconnected, then an
internal pullup device will select the X16 organization.
GND
1
2
3
4
V
DO
CS
CC
SK
DI
CC
Lock Out
8
7
6
5
V CC
RESET(RESET)
ORG
GND
Function
Chip Select
Reset I/O
Clock Input
Serial Data Input
Serial Data Output
+2.7 to 6.0V Power Supply
Ground
Memory Organization
DO
CS
SK
DI
93CX62X
1
2
3
4
8
7
6
5
RESET(RESET)
V CC
WDI
GND
DO
CS
SK
DI
93CX63X
1
2
3
4
8
7
6
5
9-85
V CC
RESET
RESET
GND
ORG
during brown out and power up/down conditions. During
system failure the watchdog timer feature protects the
microcontroller with a reset signal. Catalyst's advanced
CMOS technology substantially reduces device power
requirements. The 93CXXXX is available in 8-pin DIP, 8-
pin TSSOP or 8-pin SOIC packages. It is designed to
endure 1,000,000 program/erase cycles and has a data
retention of 100 years.
CS
SK
BLOCK DIAGRAM
DI
Active High or Low Reset Outputs
—Precision Power Supply Voltage Monitoring
—5V, 3.3V and 3V options
Hardware and Software Write Protection
Power-Up Inadvertant Write Protection
1,000,000 Program/Erase Cycles
100 Year Data Retention
Commercial, Industrial, and Automotive
Temperature Ranges
2.7-6.0 Volt Operation
16 Byte Page Mode
MEMORY ARRAY
MODE DECODE
V CC
GENERATOR
REGISTER
CLOCK
LOGIC
DATA
GND
WATCHDOG
RESET Controller
WDI RESET/RESET
DECODER
ADDRESS
OUTPUT
Vcc Monitor
BUFFER
High
Precision
DO

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cat93c5612pi-45te13 Summary of contents

Page 1

... When it is connected to ground, the X8 pin is selected. If the ORG pin is left unconnected, then an internal pullup device will select the X16 organization. © 1998 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice Active High or Low Reset Outputs —Precision Power Supply Voltage Monitoring — ...

Page 2

CAT93CXXXX ABSOLUTE MAXIMUM RATINGS* Temperature Under Bias....................– +125 C Storage Temperature........................ – +150 C Voltage on Any Pin with (1) Respect to Ground ..............–2. with Respect to Ground..................–2.0V to +7.0V CC Package Power ...

Page 3

RELIABILITY CHARACTERISTICS Symbol Parameter (1) N Endurance END (1) T Data Retention DR (1) V ESD Susceptibility ZAP (1)(3) I Latch-up LTH A.C. CHARACTERISTICS V =2.7V to 6.0V unless otherwise specified. CC Output Load is 1 TTL Gate and 100pF ...

Page 4

CAT93CXXXX INSTRUCTION SET Instruction Device Start Opcode Type Bit READ 93C46XX 1 (1) 93C56XX 1 93C66XX 1 93C57XX 1 93C86XX 1 ERASE 93C46XX 1 (1) 93C56XX 1 93C66XX 1 93C57XX 1 93C86XX 1 WRITE 93C46XX 1 (1) 93C56XX 1 93C66XX ...

Page 5

RESET CIRCUIT CHARACTERISTICS Symbol Parameter t Glitch Reject Pulse Width GLITCH V Reset Threshold Hystersis RT V Reset Output Low Voltage (I OLRS V Reset Output High Voltage OHRS Reset Threshold (Vcc=5V) (93CXXXX-45) Reset Threshold (Vcc=5V) (93CXXXX-42) Reset Threshold (Vcc=3.3V) ...

Page 6

CAT93CXXXX DEVICE OPERATION Reset Controller Description The CAT93CXXXX provides a precision RESET con- troller that ensures correct system operation during brown-out and power-up/down conditions config- ured with open drain RESET outputs. During power- up, the RESET outputs remain ...

Page 7

Read Upon receiving a READ command and an address (clocked into the DI pin), the DO pin of the CAT93CXXXX will come out of the high impedance state and, after sending an initial dummy zero bit, will begin shifting out ...

Page 8

CAT93CXXXX can then continue to clock in 8-bit (16-bit for x16 format) data to be written to the next higher address. Internally, the address pointer is incremented after each group of eight clocks (16 clocks for x16 format). If the ...

Page 9

Erase/Write Enable and Disable The CAT93CXXXX powers up in the write disable state. Any writing after power-up or after an EWDS (write disable) instruction must first be preceded by the EWEN (write enable) instruction. Once the write instruction is enabled, ...

Page 10

CAT93CXXXX Figure 8. WRAL Instruction Timing Ordering Information Prefix Device # 11 CAT 93C46 Optional Product Product Company ID Number Variation 93C46 RESET on Pin 7, No WDT 93C56: 2K ...

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