AN985B/BX
Pin Assignment Diagram
5.1
Pin Type and Buffer Type Abbreviations
Standardized abbreviations:
Table 1
Abbreviations for Pin Type
Abbreviations
Description
I
Standard input-only pin. Digital levels.
O
Output. Digital levels.
I/O
AI
I/O is a bidirectional input/output signal.
Input. Analog levels.
AO
AI/O
PWR
GND
MCL
MCH
NU
NC
Output. Analog levels.
Input or Output. Analog levels.
Power
Ground
Must be connected to Low (JEDEC Standard)
Must be connected to High (JEDEC Standard)
Not Usable (JEDEC Standard)
Not Connected (JEDEC Standard)
Table 2
Abbreviations for Buffer Type
Abbreviations
Description
Z
High impedance
Pull up, 10 kΩ
Pull down, 10 kΩ
Pull down, 20 kΩ
PU1
PD1
PD2
TS
Tristate capability: The corresponding pin has 3 operational states: Low, high and high-
impedance.
OD
Open Drain. The corresponding pin has 2 operational states, active low and tristate, and
allows multiple devices to share as a wire-OR. An external pull-up is required to sustain the
inactive state until another agent drives it, and must be provided by the central resource.
OC
PP
Open Collector
Push-Pull. The corresponding pin has 2 operational states: Active-low and active-high
(identical to output with no type attribute).
OD/PP
Open-Drain or Push-Pull. The corresponding pin can be configured either as an output with
the OD attribute or as an output with the PP attribute.
ST
TTL
Schmitt-Trigger characteristics
TTL characteristics
Data Sheet
12
Rev. 1.51, 2005-11-30
INFINEON [ Infineon ]
