TLC7528C_15 Datasheet, PDF (10/28 Pages) Texas Instruments – DUAL 8-BIT MULTIPLYING DIGITAL-TO-ANALOG CONVERTERS

TLC7528C, TLC7528E, TLC7528I
DUAL 8ĆBIT MULTIPLYING
DIGITALĆTOĆANALOG CONVERTERS
SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008
APPLICATION INFORMATION
A8 −A15
8
Address Bus
IORQ
CPU
Z80-A
WR
Address
Decode
Logic
A
A+1
DACA/DACB
CS
TLC7528
WR
DB0
DB7
D0 −D7
8
Data Bus
NOTE A: A = decoded address for TLC7528 DACA
A + 1 = decoded address for TLC7528 DACB
Figure 7. TLC7528 To Z-80A Interface
programmable window detector
The programmable window comparator shown in Figure 8 determines if the voltage applied to the DAC
feedback resistors is within the limits programmed into the data latches of these devices. Input signal range
depends on the reference and polarity; that is, the test input range is 0 to −V_ref. The DACA and DACB data
latches are programmed with the upper and lower test limits. A signal within the programmed limits drives the
output high.
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