CAT1163 Просмотр технического описания (PDF) - ON Semiconductor

Номер в каталоге

Компоненты Описание

производитель

CAT1163

Supervisory Circuits with I2C Serial CMOS EEPROM, Precision Reset Controller and Watchdog Timer (16K)

ON Semiconductor 

CAT1163

Hardware Data Protection

The CAT1163 is designed with the following hardware

data protection features to provide a high degree of data

integrity.

1. The CAT1163 features a WP pin. When the WP

pin is tied high the entire memory array becomes

write protected (read only).

2. The VCC sense provides write protection when

VCC falls below the reset threshold value (VTH).

The VCC lock out inhibits writes to the serial

EEPROM whenever VCC falls below (power

down) VTH or until VCC reaches the reset threshold

(power up) VTH. Any attempt to access the

internal EEPROM is not recognized and an ACK

will not be sent on the SDA line when RESET or

RESET is active.

Reset Threshold Voltage

The CAT1163 is offered with five reset threshold voltage

ranges. They are 4.50 ÷ 4.75 V, 4.25 ÷ 4.50 V, 3.00 ÷ 3.15 V,

2.85 ÷ 3.00 V and 2.55 ÷ 2.70 V.

tF

tHIGH

tR

tLOW

tLOW

SCL

tSU:STA

tHD:DAT

tHD:STA

tSU:DAT

SDA IN

SDA OUT

tAA

tDH

tSU:STO

tBUF

Figure 2. Bus Timing

SCL

SDA

8TH BI T

BYTE n

ACK

tWR

STOP

CONDITION

START

CONDITION

ADDRESS

Figure 3. Write Cycle Timing

SDA

SCL

START BIT

Figure 4. Start/Stop Timing

STOP BIT

http://onsemi.com

6

Share Link: