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.
s
Normal Operation:
The Normal Operation column
covers the following power management modes:
– Hyper-Speed mode
– High-Speed mode
– Low-Speed mode
– Temporary Low-Speed mode
– Standby mode
s
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.
Table 3. Pin Type Abbreviations
Symbol
[]
{}
-
Act
B
Meaning
Brackets signify alternate state
Reset configuration pin
Not an output during Suspend mode
Pin continues to function during Suspend
mode
Bidirectional
Driven High (a logical 1)
Pin is an input
Input or open drain output
Driven Low (a logical 0)
Last state of the pin prior to entering Suspend
mode
Not applicable
Pin is an active output
Open drain output
Pin is typically an open drain output, but can
be configured as a Schmitt trigger input
Built-in pulldown resistor
Programmable pulldown or no resistor
Programmable pullup or no resistor
Programmable pullup or pulldown resistor
Built-in pullup resistor
5-V safe pin
Pin is a Schmitt trigger input
Pin is typically a Schmitt trigger input, but can
be configured as an open-drain output
Three-state output
Pin Characteristics
The following information describes the individual
column headings in the Pin State tables beginning on
Drive types and power-down groups are defined in
Tables 2 and 5, respectively.
s
Pin Number:
The Pin Number column in all tables
identifies the pin number of the individual I/O signal
on the package.
s
Type:
The abbreviations in the Type column for all
tables are defined in Table 2.
s
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.
Table 2.
Output
Drive
A
B
C
2
Drive Output Description
Ioh
TTL
/Iol
TTL1
-3mA/3mA
-6mA/6mA
-12mA/12mA
-18mA/18mA
-24mA/24mA
V
cc
3.0 V
3.0 V
3.0 V
3.0 V
3.0 V
H
I
IOD
L
LS
NA
O
OD
OD-STI
PD
PPD
PPU
D
E
Notes:
1. The current out of a pin is given as a negative value.
2. Output drive is programmable.
s
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
Supply:
The Supply column identifies the V
CC
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.
PPUD
PU
S
STI
STI-OD
TS
40
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
AMD [ ADVANCED MICRO DEVICES ]
