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TS80C251G2D_14: 产品描述Power-down Mode Current Out of Specification in ROMless Mode; 文件大小32KB，共3页; 制造商Atmel (Microchip)

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TS80C251G2D_14概述

Power-down Mode Current Out of Specification in ROMless Mode

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Active Errata List

•

Power-down Mode Current Out of Specification in ROMless Mode

Power-fail Threshold Out of Specification

TWI Data Transmission in Slave Transmitter Mode

Errata History

Lot Number

All lot numbers affected

All TSC8725G2D EPROM devices are affected

Errata List

1, 3

8051

Microcontrollers

Errata Description

Power-down Mode Current Out of Specification in ROMless Mode

is out of specification when EA pin is tied to a low level. The ROMless products

and EPROM and ROM products used as ROMless (EA = 0) are consuming extra

current in power-down mode. Table 1 below shows the power-down current maxi-

mum value and specification for high speed in low voltage versions.

Table 1.

DC Characteristics – T

= -40 to +85°C

Symbol

Parameter

Power-down

Current

Power-down

Current

Max Spec

Max Value

Units

µA

Test Conditions

RET

< V

< 5.5V

RET

< V

< 3.6V

TS80C251G2D

TS83C251G2D

TS87C251G2D

Errata Sheet

Workaround

None.

Power-fail Threshold Out of Specification

The tolerance on the power-fail reset voltage threshold is out of specification. The

device may never exit reset at power-up when power-fail reset is enabled.

Workaround

Some devices may need a higher voltage to exit reset. The RSTD bit has to be set

in POWM register to disable the Power-fail Reset detector before the voltage is

reduced.

Two-wire Interface Data Transmission in Slave Transmitter Mode

When in slave transmitter mode, if the slave transmits data starting with a low

level on the bus (MSB is logic 0), data set-up time is not respected and leads to a

bus error.

Workaround

The workaround proposed consists in removing the set-up violation by stretching

the SDA line (P1.7) when the MSB of the data to transmit is logic 0. This

workaround must be implemented in states A8h, B0h, and B8h when data is writ-

ten to the serial data register (SSDAT).

Rev. 4179B–8051–10/02

TS80C251G2D_14相似产品对比

	TS80C251G2D_14	TS83C251G2D_14	TS87C251G2D_14
描述	Power-down Mode Current Out of Specification in ROMless Mode	Power-down Mode Current Out of Specification in ROMless Mode	Power-down Mode Current Out of Specification in ROMless Mode

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