i.MX515 ARM Cortex-A8
Tower Computer Module
TWR1650
Features
ARM Cortex-A8 processor, 800MHz
512MB SDRAM, 1GB Flash
Four (4) USB ports
10/100BASE-T Ethernet
Controller Area Network (CAN) port
Five (5) serial ports
One (1) SD/MMC card slot
16 bits of digital I/O
The TWR1650 is an i.MX515 evaluation
module boasting a subset of features common
to an industrial-grade single board computer.
Featuring an 800MHz ARM Cortex-A8 CPU,
the TWR1650 delivers the performance
needed to enable multimedia rich applications
in rugged, harsh environments. Although rich
in embedded I/O features, the TWR1650
consumes minimal power, simulating the
demanding environmental conditions in which
OEMs must operate. OEM versions of the
SBC are available to ease transition from
development to production.
On-board peripherals include 10/100BASE-T
Ethernet, USB On-the-Go, a real-time clock,
Software Support
Linux
Windows CE
VxWorks
Android
C, compilers
watchdog timer, 24-bit TFT, flat panel display
output, keypad, two (2) PWM outputs, a
bootable SD/MMC card slot, 1-Wire interface,
one (1) serial port, CAN, and (16) lines of
discrete I/O. More serial ports, CAN, and
another SD/MMC interface are accessible
through the Tower’s card-edge connectors. For
additional expansion, the TWR1650 comes
equipped with the rugged StackableUSB
interface for well-defined board-to-board
2
communication via USB, I C, and SPI.
For the complete off-the-shelf, OEM single
board computer version, see the SBC1651
and the SBC1652.
Mounting/Packaging
Standoffs, STDOFFUSB
Compatible Hardware
StackableUSB Client Devices
PC Hosts
PSxxx, Power Supplies
Secure Digital Devices
RS232/RS485 Devices
CAN Devices
Ethernet Networks
Technical Details:
At the heart of the TWR1650 is the
Freescale i.MX515 multimedia applications
processor, a System on Chip (SOC) offering
high-performance processing optimized for
the lowest power consumption. The core of
i.MX515 is an 800MHz ARM Cortex-A8
CPU. The CPU is augmented by a floating-
point coprocessor, ARM’s NEON SIMD
media accelerator, and OpenGL ES 2.0 and
OpenVG 1.1 hardware accelerators for fast,
power-efficient graphics operations.
The i.MX515 SOC integrates many
peripherals, including an interrupt controller,
watchdog timer, SDRAM and flash memory
controllers, three (3) High-Speed USB ports,
one (1) Full-Speed On-The-Go USB port,
one (1) 10/100 Ethernet MAC, three (3)
16C550 UARTs, 1-Wire interface, 24-bit flat
panel display output, an 8-row x 6-column
keypad controller, and PWM outputs.
In addition to the peripherals built into the
i.MX515, the TWR1650 adds two (2) more
16C550 UARTs, a Controller Area Network
(CAN) controller, and 16 bits of 82C55A-
compatible programmable parallel I/O.
The TWR1650 offers three boot options: A
dedicated 4MB SPI NOR flash memory, a
partition of the NAND flash, and a bootable
SD/MMC card slot.
The TWR1650 memory subsystem provides
512MB of DDR2 SDRAM for application
data. The 4MB SPI NOR flash memory holds
the bootloader and operating system. 1GB
NAND flash is available for operating system
and non-volatile user storage.
If a larger program or data storage space is
required, or if removability is needed, a
second SD/MMC interface can be accessed
via the Tower’s card-edge connector.
Five (5) 16C550-compatible RS232 serial
ports allow communication with low-speed
devices. Four of the ports are accessed via
the Tower’s card-edge connector; the fifth is
on-board and software-configurable for half-
duplex RS485 communication.
The TWR1650 can be powered from an
external 5 VDC source or a battery. If
external power is supplied while a battery is
plugged in, the battery will be recharged.
Advanced power management is enabled by
the new Freescale MC13892.
The TWR1650 becomes a powerful front-
end processor for control applications
with the standard StackableUSB expansion.
This popular I/O channel accommodates
multiple stacked I/O boards without use of a
hub.
For true 32-bit application development, the
TWR1650 supports 32-bit operating systems
such as Linux and Windows CE. Both have
full tool suites available, including compilers
and debuggers.
On-board Memory:
512MB DDR2 Synchronous DRAM
4MB SPI NOR flash
1GB NAND flash
Memory Expansion:
One (1) SD/MMC card slot
One (1) SD/MMC interface on Tower
card-edge connector
Watchdog Timer:
Program must refresh watchdog timer
periodically, or system will be reset
Enabled through software
COM1-COM5 Serial Ports:
Five (5) asynchronous serial ports
16C550-compatible
RTS and CTS modem controls (all
except COM3)
RS232 on all channels
COM1 RS485 half-duplex
COM2 – COM5 on Tower card-edge
connector
10/100BASE-T Ethernet:
One (1) 10/100BASE-T Ethernet port on
Tower card-edge connector
USB:
One (1) Full-Speed On-The-Go USB 2.0
port, providing device and limited Host
functions, Micro-AB connector
Three (3) High-Speed USB 2.0 Host
ports, StackableUSB connector
Transfers at High-Speed 480Mbit/sec,
Full-Speed 12Mbit/sec, or 1.5Mbit/sec
Controller Area Network:
CAN version 2.0B, 1Mbit/sec on-board
and on Tower card-edge connector
Standard and extended data and remote
frames
Two (2) receive buffers and three (3)
transmit buffers with prioritized message
storage
Real Time Clock:
RTC with rechargeable on-board battery
Specifications:
Mechanical:
Freescale Tower form factor
3.543” x 3.197”
Installed Secure Digital (SD) card
extends past edge of board
Power Requirements:
+5v ±5% at TBD A typical, TBD A max
Battery input voltage up to 4.8V
Power Connector
Pin
1
2
3
Signal
+5V
Battery Input
GND
Environmental:
Operating range 0° to +70°C
-40° to +85°C storage
5%-95% relative humidity, non-condensing
Processor Core Section:
Freescale i.MX515 multimedia
applications processor
800 MHz ARM Cortex-A8 CPU core
Hardware graphics accelerators (video,
OpenGL ES 2.0 and OpenVG 1.1)
Digital I/O:
82C55-compatible digital I/O:
•
16 TTL bi-directional signals
•
Direction programmable in two
(2) groups of eight bits
•
470-ohm current-limiting
resistors on all lines
I
2
C (on StackableUSB connector)
SPI (on StackableUSB connector)
1-Wire interface
Two (2) PWM outputs
8-row x 6-column keypad
Video I/O:
24-bit TFT flat panel display output
External Connections:
Tower card-edge connectors for PWM,
1-Wire, SPI, I
2
C, COM2-COM5, CAN,
Ethernet, SD/MMC, TFT display out
40-pin header for digital I/O, CAN, and
keypad interface
40-pin header for TFT display out
One (1) SD/MMC card slot
One (1) USB Micro-AB USB connector
One (1) DB-9 connector for COM1
RS232 and RS485
2-pin locking header for reset
2.1mm barrel power input
StackableUSB trademark Micro/sys, Inc.
VxWorks trademark Wind River
Android trademark Google, Inc.
Ordering Information:
Tower Modules:
TWR1650-Linux* i.MX515 ARM Cortex-A8
Computer Module for the
Tower System, Linux-
ready
TWR1650-WinCE* i.MX515 ARM Cortex-A8
Computer Module for the
Tower System, WinCE-
ready
Related Tower System Offerings:
CRR-TOWER
Carrier Board for two (2)
– four (4) top-mounting
¼-size 104 Form Factor
boards for the Tower
System
HUB-TOWER
Hub Carrier Board for
two (2) – four (4) top-
mounting ¼-size 104
Form Factor boards for
the Tower System
Related OEM Offerings:
i.MX515 ARM Cortex-A8
SBC1651
†
CPU, 800MHz, 512MB
SDRAM, 4MB NOR
Flash, dual Ethernet, 104
Form Factor
†
i.MX515 ARM Cortex-A8
SBC1651-ET
CPU, 600MHz, 512MB
SDRAM, 4MB NOR Flash,
dual Ethernet, 104 Form
Factor, -40°C to +85°C
operating temperature
i.MX515 ARM Cortex-A8
SBC1652
†
CPU, 800MHz, 512MB
SDRAM, 4MB NOR
Flash, 2.5”x3.5” handheld
†
i.MX515 ARM Cortex-A8
SBC1652-ET
CPU, 600MHz, 512MB
SDRAM, 4MB NOR Flash,
2.5”x3.5” handheld, -40°C
to +85°C operating
temperature
*Ships with a 4G Micro SD/MMC Card.
†
Turn-key development kits available.
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