Manufacturers
TECHTOOLS ACM-2X8
Description
ACTIVE CABLE MODULE DUAL 8 BIT
Part Number
ACM-2X8
Price
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Manufacturer
TECHTOOLS
Lead Time
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Category
PRODUCTS - A
Datasheet
Extracted Text
○○ ○○ TechTools ACM-2X8 Active Cable Module - Dual 8 bit Target Interface EPROM/FLASH Select - JP24 EPROM/FLASH Select - JP21 for JP23 (D8-15) for JP20 (D0-7) � � ���������� ���������� ����� ����� ����� ����� ����� ����� Target Cable Connector - JP20 / JP23 ����� ����� ��+ ���� Additional Address Lines - JP22 Reset Signals - JP18 ������� ����������� ������������ � � ��� ���� ���� ���� ���� ���� Cable Select - JP19 Feature Connector - JP17 �������������� � � ��#�"’�������� �������������� � � ���.�� ��#�"’�������� �������������� ) , ��#�"’�������� �������������� �-�.�� * - ��#�"’�������� � ���� � ��!!����"� + �� ( ���� ��#$%��"� �� �� ( ��&"�’���"� �� �� ��#�� #�!������"�$ �) �, ( FlexROM III Connector - J4 WARNING: � Never remove or insert the ACM Target Cables (6”, 100mil, 28/32 pin IDC) module when power is present. Always remove power from the emulator before changing the ACM module or Target Cable. D0-7 LED � D8-15 Reset Connector � Pin 1 Orientation (Red Stripe) ○○○○○○○○○○○○○○ ACM-2X8 � FlexROM III To ACM module ( side view ) Insertion Instructions: 1. Connect the Target Cables to the ACM module. 2. Insert the ACM module into the open slot provided at the rear of the FlexROM III emulator. 3. Gently slide module into the unit until it stops. Then apply firm pressure until the ACM module seats completely. (972) 272-9392, FAX: (972) 494-5814, sales@tech-tools.com, http://www.tech-tools.com Copyright © 2001 TechTools, P .O. Box 462101 Garland, Texas 75046-2101. FlexROM and Active Cable Module are trademarks of TechTools. TechTools ACM-2X8 Active Cable Module - Dual 8 bit Target Interface ACM-2X8 Application Note The ACM-2X8 module allows the FlexROM III to emulate 2 memory devices simultaneously (with some limits.) In some cases, this allows you to avoid buying a second emulator. Capabilities: –supports byte accesses (read or write to a each device individually) –supports word accesses (read or write to BOTH devices simultaneously) –supports single device emulation (up to ½ the emulator’s memory capacity) –supports individual control lines (CS,OE and WT) from each device. –Suitable for ODD/EVEN 8bit devices on a 16bit bus –Can be used for STACKED devices (eg: 2 – 32K devices in a 64K address space) on an 8 bit bus –Allows emulation of CODE and DATA spaces in an 8051 without needing to over-lay them. –Each interface can be configured for EPROM or FLASH pin-outs as well as for 28 or 32 pin cables. Limitations: –Does NOT support reading from one device while writing to the other (writes to BOTH) –Requires common address lines, therefore: – Can NOT support 2 devices in 2 separate targets – Can NOT support 2 devices on separate buses (full Harvard architecture) –Must use LOWER interface when emulating a SINGLE device –If emulating devices of differing sizes, the LARGER device must be attached to the LOWER interface. Summary: The ACM-2X8 can support 2 devices as long as they share the same address lines and you do not enable one device for READING while WRITING to the other. This covers most 16bit targets and many applications involving 2 devices in an 8 bit target. If you need separate address lines or need to read from one device while writing to the other device, then you need 2 completely independent emulators. Two FlexROM III’s can be daisy-chained together allowing you to connect both of them to a single printer port. Further, you can control, status and download to each emulator individually or collectively with a single command line program or our GUI software (QuickLoader.) If you have any questions, we can be reached at: support@tech-tools.com FAX: 972-494-5814 Voice: 972-272-9392 (972) 272-9392, FAX: (972) 494-5814, sales@tech-tools.com, http://www.tech-tools.com Copyright © 2001 TechTools, P .O. Box 462101 Garland, Texas 75046-2101. FlexROM and Active Cable Module are trademarks of TechTools.
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