Rainbow-electronics DS1854 Manual do Utilizador descarregar pdf (Página 16)

DS1854

Dual Temperature-Controlled Resistors with

Two Monitors

16 ____________________________________________________________________

MEMORY

LOCATION

EEPROM/

SRAM

R/W

DEFAULT

SETTING

NAME OF

LOCATION

FUNCTION

80 SRAM R/W — Mode —

Bit 7 — — 0 X —

6——0 X —

5——0 X —

4——0 X —

3——0 X —

2——0 X —

1——1 TEN

If TEN = 0, the temperature conversions update and the

resistors can be controlled manually. The user sets the

resistor in manual mode by writing to addresses 82h and

83h in Table 01 to control resistors 0 and 1, respectively.

0——1 AEN

AEN = 0 provides manual control of the temperature

index.

81 SRAM R — Temp index

This byte is the temperature-calculated index used to

select the address of resistor settings in the look-up

tables.

SRAM R/W 00 Resistor 0 Resistor 0 position values from 00h to FFh.

SRAM R/W 00 Resistor 1 Resistor 1 position values from 00h to FFh.

84 to 87 SRAM 00 Reserved —

EEPROM

R/W —

Interrupt enable

This byte configures a maskable interrupt, determining

which event asserts a buffer 1 output (MINT set to 1, see

temperature, V

, MON1, or MON2 is desired to generate

an interrupt, the corresponding bits are set to 1. If

interrupt generation is not desired, set all bits to 0.

Bit 7 — — 1 TMP —

6——1 V

—

5——1 MON1 —

4——1 MON2 —

3——0 X —

2——0 X —

1——0 X —

0——0 X —

EEPROM

R/W — Configuration —

Bit 7 — — 0 X —

6——0 X —

Table 01h

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22

Two Monitors 1

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