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Part: CAT93C8614
Category:
Power Management
-> Supervisory Circuits
-> System Supervisors/Reset
Description: Supervisory Circuits With Microwire Serial CMOS E2PROM, Precision Reset Controller And Watchdog Timer
Company: Catalyst Semiconductor
Datasheet: Download CAT93C8614 datasheet File size : 43 kB
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Datasheet text preview:
Advanced Information
CAT93CXXXX (1K-16K)
Supervisory Circuits with Microwire Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer
FEATURES
s Watchdog Timer s Programmable Reset Threshold s Built-in Inadvertent Write Protection s Active High or Low Reset Outputs
--Precision Power Supply Voltage Monitoring --5V, 3.3V and 3V options
s Hardware and Software Write Protection s Power-Up Inadvertant Write Protection s 1,000,000 Program/Erase Cycles s 100 Year Data Retention s Commercial, Industrial, and Automotive
--VCC Lock Out
s High Speed Operation: 3MHz s Low Power CMOS Technology s x 16 or x 8 Selectable Serial Memory s Self-Timed Write Cycle with Auto-Clear s Sequential Read s Fast Nonvolatile Write Cycle: 3ms Max
Temperature Ranges
s 2.7-6.0 Volt Operation s 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, 8pin 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
93CX61X
CS SK DI DO 1 2 3 4 8 7 6 5 VCC CS RESET(RESET) SK ORG DI GND DO
BLOCK DIAGRAM
93CX63X
VCC RESET(RESET) WDI GND CS SK DI DO 1 2 3 4 8 7 6 5 VCC RESET RESET GND
93CX62X
1 2 3 4 8 7 6 5
VCC
GND
PIN FUNCTIONS
Pin Name CS RESET/RESET SK DI DO VCC GND ORG Function Chip Select Reset I/O Clock Input Serial Data Input
ORG
MEMORY ARRAY
ADDRESS DECODER
DATA REGISTER DI MODE DECODE LOGIC OUTPUT BUFFER
CS
Serial Data Output +2.7 to 6.0V Power Supply Ground Memory Organization
SK CLOCK GENERATOR DO
RESET Controller
WATCHDOG
High Precision
Vcc Monitor
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.
WDI RESET/RESET
© 1998 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
9-85
CAT93CXXXX
Advanced Information
ABSOLUTE MAXIMUM RATINGS*
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
COMMENT
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.
D.C. OPERATING CHARACTERISTICS VCC = +2.7V to +6.0V, unless otherwise specified. Limits Symbol ICC1 ICC2 ISB1 ISB2 ILI ILO VIL1 VIH1 VOL1 VOH1 Parameter Power Supply Current (Write) Power Supply Current (Read) Power Supply Current (Standby) (x8 Mode) Power Supply Current (Standby) (x16Mode) Input Leakage Current Output Leakage Current (Including ORG pin) Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage 2.4 V -0.1 2 Min. Typ. Max. 3 1 10 0 1 1 0.8 VCC+1 0.4 Units mA mA µA µA µA µA V V V 4.5VVCC<5.5V IOL = 2.1mA IOH = -400µA Test Conditions fSK = 1MHz VCC = 5.0V fSK = 1MHz VCC = 5.0V CS = 0V ORG=GND CS=0V ORG=Float or VCC VIN = 0V to VCC VOUT = 0V to VCC, CS = 0V 4.5VVCC<5.5V
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 N END (1) T DR (1) VZAP(1) I LTH(1)(3) Parameter Endurance Data Retention ESD Susceptibility Latch-up Min. 1,000,000 100 2000 100 Max. Units Cycles/Byte Years Volts mA Reference Test Method MIL-STD-883, Test Method 1033 MIL-STD-883, Test Method 1008 MIL-STD-883, Test Method 3015 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 = 2.7V -6V SYMBOL PARAMETER tCSS tCSH tDIS tDIH tPD1 tPD0 tHZ(1) tEW tCSMIN tSKHI tSKLOW tSV SKMAX CS Setup Time CS Hold Time DI Setup Time DI Hold Time Output Delay to 1 Output Delay to 0 Output Delay to High-Z Program/Erase Pulse Width Minimum CS Low Time Minimum SK High Time Minimum SK Low Time Output Delay to Status Valid Maximum Clock Frequency DC 0.5 0.5 0.5 0.5 1000 DC Min. 250 0 250 250 0.5 0.5 500 5 0.1 0.1 0.1 0.1 3000 Max. VCC = 4.5V-5.5V Min. 50 0 50 50 0.1 0.1 100 5 ns ns ns ns µs µs ns ms µs µs µs µs KHZ CL = 100pF Test
Max. UNITS Conditions
Power-Up Timing(1)(2) Symbol tPUR tPUW Parameter Power-up to Read Operation Power-up to Write Operation Max. 1 1 Units ms ms
CAPACITANCE TA = 25°C, f = 1.0 MHz, VCC = 5V Symbol CI/O(1) CI N
(1)
Test Input/Output Capacitance Input Capacitance
Max. 8 6
Units pF pF
Conditions VI/O = 0V 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
CAT93CXXXX
INSTRUCTION SET Instruction Device Type READ 93C46XX 93C56XX(1) 93C66XX 93C57XX 93C86XX 93C46XX 93C56XX(1) 93C66XX 93C57XX 93C86XX 93C46XX 93C56XX(1) 93C66XX 93C57XX 93C86XX 93C46XX 93C56XX 93C66XX 93C57XX 93C86XX 93C46XX 93C56XX 93C66XX 93C57XX 93C86XX 93C46XX 93C56XX 93C66XX 93C57XX 93C86XX 93C46XX 93C56XX 93C66XX 93C57XX 93C86XX Start Opcode Bit 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 10 10 10 10 10 11 11 11 11 11 01 01 01 01 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Address x8 x16 A6A0 A8A0 A8A0 A7-A0 A10-A0 A6A0 A8A0 A8A0 A7-A0 A10-A0 A6A0 A8A0 A8A0 A7-A0 A10-A0 A5-A0 A7-A0 A7-A0 A6-A0 A9-A0 A5-A0 A7-A0 A7-A0 A6-A0 A9-A0 A5-A0 A7-A0 A7-A0 A6-A0 A9-A0 D7-D0 D7-D0 D7-D0 D7-D0 D7-D0 D15-D0 D15-D0 D15-D0 D15-D0 D15-D0 x8 Data x16
Advanced Information
Comments Read Address ANA0
ERASE
Clear Address ANA0
WRITE
Write Address ANA0
EWEN
11XXXXX 11XXXX 11XXXXXXX 11XXXXXX 11XXXXXXX 11XXXXXX 11XXXXXX 11XXXXX 11XXXXXXXXX 11XXXXXXXX 00XXXXX 00XXXX 00XXXXXXX 00XXXXXX 00XXXXXXX 00XXXXXX 00XXXXXX 00XXXXX 00XXXXXXXXX 00XXXXXXXX 10XXXXX 10XXXX 10XXXXXXX 10XXXXXX 10XXXXXXX 10XXXXXX 10XXXXXX 10XXXXX 10XXXXXXXXX 10XXXXXXXX 01XXXXX 01XXXX 01XXXXXXX 01XXXXXX 01XXXXXXX 01XXXXXX 01XXXXXX 01XXXXX 01XXXXXXXXX 01XXXXXXXX
Write Enable
EWDS
Write Disable
ERAL
Clear All Addresses
WRAL
D7-D0 D7-D0 D7-D0 D7-D0 D7-D0
D15-D0 D15-D0 D15-D0 D15-D0 D15-D0
Write All Addresses
Note: (1) Address bit A8 for 256x8 ORG and A7 for 128x16 ORG are "Don't Care" bits, but must be kept at either a "1" or "0" for READ, WRITE and ERASE commands.
Stock No. 21084-01 2/98
9-88
Advanced Information
CAT93CXXXX
RESET CIRCUIT CHARACTERISTICS
Symbol
tGLITCH VRT VOLRS VOHRS
Parameter
Glitch Reject Pulse Width Reset Threshold Hystersis Reset Output Low Voltage (IOLRS=1mA) Reset Output High Voltage Reset Threshold (Vcc=5V) (93CXXXX-45) Reset Threshold (Vcc=5V) (93CXXXX-42)
Min.
Max.
100
Units
ns mV
15 0.4 Vcc-0.75 4.50 4.25 3.00 2.85 2.55 130 4.75 4.50
V V
V 3.15 3.00 2.70 270 5 1 ms µs V
VTH
Reset Threshold (Vcc=3.3V) (93CXXXX-30) Reset Threshold (Vcc=3.3V) (93CXXXX-28) Reset Threshold (Vcc=3V) (93CXXXX-25)
tPURST tRPD
Power-Up Reset Timeout VTH to RESET Output Delay RESET Output Valid
VRVALID
Figure 1. RESET Output Timing
t
GLITCH
VTH VRVALID VCC t PURST t RPD t PURST
RESET
t RPD
RESET
9-89
Stock No. 21084-01 2/98
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