LM3S1621 Datasheet, PDF (42/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Architectural Overview
Figure 1-1. Stellaris LM3S1621 Microcontroller High-Level Block Diagram
LM3S1621
JTAG/SWD
System
Control and
Clocks
(w/ Precis. Osc.)
ARM®
Cortex™-M3
(80MHz)
ROM
Boot Loader
DriverLib
AES & CRC
NVIC
DCode bus
MPU
ICode bus
System Bus
Flash
(128KB)
Bus Matrix
SRAM
(32KB)
DMA
General-
Purpose
Timer (4)
External
Peripheral
Interface
I2C
(2)
Analog
Comparator
(2)
SYSTEM PERIPHERALS
Watchdog
Timer
(2)
Hibernation
Module
GPIOs
(67)
SERIAL PERIPHERALS
UART
(3)
SSI
(2)
ANALOG PERIPHERALS
10- Bit ADC
Channels
(8)
42
January 21, 2012
Texas Instruments-Production Data