CTLST CAT93C8634UI-45TE13, CAT93C8634UI-42TE13, CAT93C8634UI-30TE13, CAT93C8633UA-28TE13, CAT93C8633UA-25TE13 Datasheet

Advanced Information

CAT93CXXXX (1K-16K)

Supervisory Circuits with Microwire Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer

FEATURES

■Watchdog Timer

■Programmable Reset Threshold

■Built-in Inadvertent Write Protection —V CC Lock Out

■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

■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

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 16bits 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

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.

PIN CONFIGURATION

BLOCK DIAGRAM

93CX61X					93CX62X							93CX63X
CS	1	8	VCC	CS			1	8		VCC	CS				1	8				VCC
SK	2	7	RESET(RESET) SK				2	7		RESET(RESET)	SK				2	7				RESET
DI	3	6	ORG	DI			3	6		WDI	DI				3	6				RESET
DO	4	5	GND	DO			4	5		GND	DO				4	5				GND

PIN FUNCTIONS

Pin Name	Function
CS	Chip Select
RESET/RESET	Reset I/O
SK	Clock Input
DI	Serial Data Input
DO	Serial Data Output
VCC	+2.7 to 6.0V Power Supply
GND	Ground
ORG	Memory Organization

Note: When the ORG pin is connected to VCC, the X16 organiza 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.

ORG

DI

CS

SK

VCC		GND
MEMORY ARRAY						ADDRESS
						DECODER

DATA

REGISTER

OUTPUT

BUFFER

MODE DECODE

LOGIC

CLOCK							DO
GENERATOR
					RESET Controller
							High
				WATCHDOG			Precision
							Vcc Monitor

WDI RESET/RESET

© 1998 by Catalyst Semiconductor, Inc.	9-85
Characteristics subject to change without notice

CAT93CXXXX	Advanced Information
ABSOLUTE MAXIMUM RATINGS*	COMMENT

Temperature Under Bias....................	–55°C to +125°C
Storage Temperature........................	–65°C to +150°C
Voltage on Any Pin with
Respect to Ground(1) ..............	–2.0V to +VCC + 2.0V
VCC with Respect to Ground..................		–2.0V to +7.0V
Package Power Dissipation
Capability (Ta = 25°C)1.0W.................................		1.0W
Lead Soldering Temperature (10 secs)		...............300°C
Output Short Circuit Current(2) ..........................		100mA

D.C. OPERATING CHARACTERISTICS

VCC = +2.7V to +6.0V, unless otherwise specified.

Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.

			Limits
Symbol	Parameter	Min.	Typ.	Max.	Units	Test Conditions
ICC1	Power Supply Current			3	mA	fSK = 1MHz
	(Write)					VCC = 5.0V
ICC2	Power Supply Current			1	mA	fSK = 1MHz
	(Read)					VCC = 5.0V
ISB1	Power Supply Current			10	μA	CS = 0V
	(Standby) (x8 Mode)					ORG=GND
ISB2	Power Supply Current			0	μA	CS=0V
	(Standby) (x16Mode)					ORG=Float or VCC
ILI	Input Leakage Current			1	μA	VIN = 0V to VCC
ILO	Output Leakage Current			1	μA	VOUT = 0V to VCC,
	(Including ORG pin)					CS = 0V
VIL1	Input Low Voltage	-0.1		0.8	V	4.5V≤VCC<5.5V
VIH1	Input High Voltage	2		VCC+1	V
VOL1	Output Low Voltage			0.4	V	4.5V≤VCC<5.5V
VOH1	Output High Voltage	2.4				IOL = 2.1mA
					V	IOH = -400μA

Note:

(1)The minimum DC input voltage is –0.5V. During transitions, inputs may undershoot to –2.0V for periods of less than 20 ns. Maximum DC voltage on output pins is VCC +0.5V, which may overshoot to VCC + 2.0V for periods of less than 20ns.

(2)Output shorted for no more than one second. No more than one output shorted at a time.

Stock No. 21084-01 2/98	9-86

Advanced Information CAT93CXXXX

RELIABILITY CHARACTERISTICS

Symbol

Parameter

Min.

Max.

Units

Reference Test Method

NEND(1)

Endurance

1,000,000

Cycles/Byte

MIL-STD-883, Test Method 1033

TDR(1)

Data Retention

100

Years

MIL-STD-883, Test Method 1008

VZAP(1)

ESD Susceptibility

2000

Volts

MIL-STD-883, Test Method 3015

ILTH(1)(3)

Latch-up

100

mA

JEDEC Standard 17

A.C. CHARACTERISTICS

VCC=2.7V to 6.0V unless otherwise specified.

Output Load is 1 TTL Gate and 100pF

Limits

VCC =

VCC =

2.7V -6V

4.5V-5.5V

Test

SYMBOL

PARAMETER

Min.

Max.

Min.

Max.

UNITS

Conditions

tCSS

CS Setup Time

250

50

ns

tCSH

CS Hold Time

0

0

ns

tDIS

DI Setup Time

250

50

ns

tDIH

DI Hold Time

250

50

ns

tPD1

Output Delay to 1

0.5

0.1

μs

tPD0

Output Delay to 0

0.5

0.1

μs

CL = 100pF

tHZ(1)

Output Delay to High-Z

500

100

ns

tEW

Program/Erase Pulse Width

5

5

ms

tCSMIN

Minimum CS Low Time

0.5

0.1

μs

tSKHI

Minimum SK High Time

0.5

0.1

μs

tSKLOW

Minimum SK Low Time

0.5

0.1

μs

tSV

Output Delay to Status Valid

0.5

0.1

μs

SKMAX

Maximum Clock Frequency

DC

1000

DC

3000

KHZ

Power-Up Timing(1)(2)

Symbol		Parameter			Max.		Units
tPUR		Power-up to Read Operation			1		ms
tPUW		Power-up to Write Operation			1		ms
CAPACITANCE TA = 25°C, f = 1.0 MHz, VCC = 5V
Symbol		Test	Max.		Units		Conditions
CI/O(1)		Input/Output Capacitance	8		pF		VI/O = 0V
CIN(1)		Input Capacitance	6		pF		VIN = 0V

Note:

(1)This parameter is tested initially and after a design or process change that affects the parameter.

(2)tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated.

(3)Latch-up protection is provided for stresses up to 100 mA on address and data pins from –1V to VCC +1V.

9-87	Stock No. 21084-01 2/98