PIN STATE TABLES
The pin state tables beginning on page 42 are grouped
alphabetically by function and show pin states during
reset, normal operation, and Suspend mode, along
with output drive strength, maximum load, supply
source, and power-down groups.
■ Normal Operation: The Normal Operation column
covers the following power management modes:
– Hyper-Speed mode
– High-Speed mode
– Low-Speed mode
Pin Characteristics
– Temporary Low-Speed mode
– Standby mode
The following information describes the individual
column headings in the Pin State tables beginning on
page 42. Most abbreviations are defined in Table 3.
Drive types and power-down groups are defined in
Tables 2 and 5, respectively.
■ Suspend State: The letters used in the Suspend
State column are defined in Table 3. Note that in
Critical Suspend mode, pin terminations remain un-
changed from the prior mode.
■ Pin Number: The Pin Number column in all tables
identifies the pin number of the individual I/O signal
on the package.
Table 3. Pin Type Abbreviations
Symbol Meaning
■ Type: The abbreviations in the Type column for all
tables are defined in Table 2.
[ ]
{ }
-
Brackets signify alternate state
Reset configuration pin
■ Output Drive: The Output Drive column designates
the output drive strength of the pin. The footnote
after the drive strength letter designates that the
drive strength is programmable. The available drive
strengths are indicated in Table 2.
Not an output during Suspend mode
Act
Pin continues to function during Suspend
mode
B
H
Bidirectional
Driven High (a logical 1)
Pin is an input
Table 2. Drive Output Description
I
Output
Drive
1
IohTTL/IolTTL
Vcc
IOD
L
Input or open drain output
Driven Low (a logical 0)
A
-3mA/3mA
-6mA/6mA
3.0 V
3.0 V
3.0 V
3.0 V
3.0 V
B
LS
Last state of the pin prior to entering Suspend
mode
C2
D
E2
-12mA/12mA
-18mA/18mA
-24mA/24mA
NA
O
Not applicable
Pin is an active output
Open drain output
OD
Notes:
OD-STI Pin is typically an open drain output, but can
be configured as a Schmitt trigger input
1. The current out of a pin is given as a negative value.
2. Output drive is programmable.
PD
PPD
PPU
PPUD
PU
Built-in pulldown resistor
Programmable pulldown or no resistor
Programmable pullup or no resistor
Programmable pullup or pulldown resistor
Built-in pullup resistor
■ Max Load: The Max Load column designates the
load at which the I/O timing for that pin is guaran-
teed. It is also used to determine derated AC timing.
S
5-V safe pin
■ Supply: The Supply column identifies the VCC pin
that supplies power for the specified I/O pin.The pin
state table shows the pin state and termination for
each power management unit mode.
STI
Pin is a Schmitt trigger input
STI-OD Pin is typically a Schmitt trigger input, but can
be configured as an open-drain output
TS
Three-state output
40
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
AMD [ AMD ]
