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PDF S93663 Data sheet ( Hoja de datos )
| Número de pieza | S93663 | |
| Descripción | Voltage Monitor and Reset Controller | |
| Fabricantes | ETC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de S93663 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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SUMMIT
MICROELECTRONICS, Inc.
Precision Supply-Voltage Monitor and Reset Controller
S93662/S93663
FEATURES
• Precision Monitor & RESET Controller
— RESET and RESET Outputs
— Guaranteed RESET Assertion to VCC = 1V
— 200ms Reset Pulse Width
— Internal 1.26V Reference with ±1% Accuracy
— ZERO External Components Required
• Memory
— 4K-bit Microwire Memory
— S93662
– Internally Ties ORG Low
– 100% Compatible With all 8-bit
Implementations
– Sixteen Byte Page Write Capability
— S93663
– Internally Ties ORG High
– 100% Compatible With all 16-bit
Implementations
– Eight Word Page Write Capability
OVERVIEW
The S93662 and S93663 are precision power supervi-
sory circuits providing both active high and active low
reset outputs.
Both devices have 4k-bits of E2PROM memory that is
accessible via the industry standard microwire bus. The
S93662 is configured with an internal ORG pin tied low
providing a 8-bit byte organization and the S93663 is
configured with an internal ORG pin tied high providing
a 16-bit word organization. Both the S93662 and
S93663 have page write capability. The devices are
designed for a minimum 100,000 program/erase cycles
and have data retention in excess of 100 years.
BLOCK DIAGRAM
VCC
8
5kHz
OSCILLATOR
RESET
PULSE
GENERATOR
6 RESET#
CS 1
SK 2
DI 3
+ VTRIP
–
RESET
CONTROL
1.26V
MODE
DECODE
ADDRESS
DECODER
WRITE
CONTROL
7 RESET
DO 4
5
GND
DATA I/O
E2PROM
MEMORY
ARRAY
2012 T BD 2.0
SUMMIT MICROELECTRONICS, Inc. • 300 Orchard City Drive, Suite 131 • Campbell, CA 95008 • Telephone 408-378-6461 • Fax 408-378-6586 • www.summitmicro.com
© SUMMIT MICROELECTRONICS, Inc. 2000
2012 2.0 4/18/00
Characteristics subject to change without notice
1
1 page  
S93662/S93663
SK
CS
AN AN-1
DI 1 0 1
A0 DN
D0
tCS
STATUS
VERIFY
STANDBY
tSV BUSY
tHZ
HIGH-Z
DO READY
HIGH-Z
tEW
Figure 3. Write Instruction Timing
2012 ILL 5 1.0
SK
CS
AN AN-1
DI 1 1 1
A0
STATUS VERIFY
tCS
STANDBY
tSV tHZ
HIGH-Z
DO BUSY READY
HIGH-Z
tEW
Figure 4. Erase Instruction Timing
2012 ILL6 1.0
SK
CS
DI
1 00
*
* ENABLE=1
DISABLE=00
1
STANDBY
2012 ILL 7 1.0
Figure 5. EWEN/EWDS Instruction Timing
5
2012 2.0 4/18/00
5 Page 
S93662/S93663
Frequently the reset controller will be deployed on a PC board that provides a peripheral function to a system.
Examples might be modem or network cards in a PC or a PCMCIA card in a laptop. In instances like this the peripheral
card may have a requirement for a clean reset function to insure proper operation. The system may or may not provide
a reset pulse of sufficient duration to clear the peripheral or to protect data stored in a nonvolatile memory.
The I/O capability of the RESET pins can provide a solution. The system’s reset signal to the peripheral can be fed
into the S93662/663 and it in turn can clean up the signal and provide a known entity to the peripheral’s circuits. The
figure below shows the basic timing characteristics under the assumption the reset input is shorter in duration than
tPURST. The same reset output affect can be attained by using the active high reset input.
RESET#
Input
RESET#
Output
RESET
Output
t PURST
2012 T fig09 2.0
When planning your resistor pull-up and pull-down values, use the following chart to help determine min. resistances.
Worst Case RESET Sink/Source Capabilities at Various VCC Levels
Parameter
Symbol
RESET# Output
Voltage
VOL
RESET# Output
Voltage
VOL
RESET Output
Voltage
VOH
Condition
VCC = 1.0V, IOL=100µA
VCC = 1.2V, IOL=100µA
VCC = 3.0V, IOL=500µA
VCC = 3.6V, IOL=500µA
VCC = 4.5V, IOL=750µA
VCC = 1.0V, IOL=100µA
VCC = 1.2V, IOL=150µA
VCC = 3.0V, IOL=750µA
VCC = 3.6V, IOL=1mA
VCC = 4.5V, IOL=1mA
VCC = 1.0V, IOH=400µA
VCC = 1.2V, IOH=800µA
VCC = 3.0V, IOH=800µA
VCC = 3.6V, IOH=800µA
VCC = 4.5V, IOH=800µA
Min
VCC-0.75
VCC-0.75
VCC-0.5
VCC-0.5
VCC-0.5
Typ
Max
0.3
0.3
0.3
0.3
0.3
0.4
0.4
0.4
0.4
0.4
Units
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
2012 PGM T5 1.0
2012 2.0 4/18/00
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet S93663.PDF ] | |
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