LM3S6938 Luminary Micro, Inc, LM3S6938 Datasheet - Page 477

• Manufacturer Part Number: LM3S6938
• Description: Lm3s6938 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

July 25, 2008
Pin Name
I2C0SCL
I2C0SDA
ERBIAS
GNDPHY
GNDPHY
GNDPHY
CMOD0
CMOD1
GNDA
GNDA
LED0
LED1
MDIO
OSC0
OSC1
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
HIB
LDO
Pin Number
65
76
41
15
21
33
39
45
54
57
63
69
82
87
94
97
42
85
86
51
70
71
59
60
58
48
49
9
4
7
Preliminary
Pin Type
I/O
I/O
I/O
I/O
I/O
O
O
O
O
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
I
I
I
I
I
Buffer Type
Analog
Analog
Analog
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
OD
OD
Description
CPU Mode bit 0. Input must be set to logic 0
(grounded); other encodings reserved.
CPU Mode bit 1. Input must be set to logic 0
(grounded); other encodings reserved.
12.4 KOhm resistor (1% precision) used
internally for Ethernet PHY.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
Ground reference for logic and I/O pins.
The ground reference for the analog circuits
(ADC, Analog Comparators, etc.). These are
separated from GND to minimize the electrical
noise contained on VDD from affecting the
analog functions.
The ground reference for the analog circuits
(ADC, Analog Comparators, etc.). These are
separated from GND to minimize the electrical
noise contained on VDD from affecting the
analog functions.
GND of the Ethernet PHY
GND of the Ethernet PHY
GND of the Ethernet PHY
An output that indicates the processor is in
hibernate mode.
I2C module 0 clock
I2C module 0 data
Low drop-out regulator output voltage. This
pin requires an external capacitor between
the pin and GND of 1 µF or greater. The LDO
pin must also be connected to the VDD25 pins
at the board level in addition to the decoupling
capacitor(s).
MII LED 0
MII LED 1
MDIO of the Ethernet PHY
Main oscillator crystal input or an external
clock reference input.
Main oscillator crystal output.
LM3S6938 Microcontroller
477