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4929B–AUTO–01/07
ATA6264 [Preliminary]
20. UZP Buffer
The pin UZP is an analog output pin of the ATA6264. The UZP buffer is realized as a tristate out-
put with the ability to drive to VPERI as well as to GNDA. The selected measurement result is
given to the pin UZP as long as no new measurement is selected or the tristate command has
been sent. Driver capability is typically 4 mA.
Figure 20-1. Functional Principle of the UZP Buffer
Necessary for operation:
V
PERI
> Reset threshold, V
CP
= 10V to 50V, V
VINT
= 3.7V to 5.47V
Operating conditions of all other supply pins:
V
K30
, V
EVZ
, V
VSAT
and V
VCORE
are within functional range limits, T
J
= –40°C to +150°C
Other pins:
As defined in Section 4. ”Functional Range” on page 8.
Driver
circuitry
Tristate / normal
operating
Voltage selected
voltage from
AMUX
Driver
circuitry
GNDA
470 to 2000Ω
1 to 47 nF
UZP
2 to 8 mA
2 to 8 mA
V
VPERI