Last update: 27 April 2005

Features: compact (2.25" x 3.25") modular implementation of Motorola's 68HC912B32 microcontroller: 53 I/O lines, all programmable as input or output 10 input-only lines 4-channel (8-bit) or 2-channel (16-bit) PWM 8-channel, 10-bit analog-to-digital converter memory map: 32K Flash 768 bytes EEPROM 1K RAM on-chip J1850 (or MSCAN on 68HC912BC32) one Serial Communications Interface (SCI) SCI switch-selectable between RS232 (9-pin D-sub) and RS485 (2-pin terminal block) interfaces versatile connector design for use with solderless breadboards, prototyping cards, or embedding into your design virtual plug-in replacement for Adapt11 family of boards (minor differences) primary 50-pin connector for dedicated I/O secondary 50-pin connector for additional I/O or expanded mode memory bus memory expandable offboard to 64K with 8-bit or 16-bit data bus 16-bit memory expansion board available Background Debug Mode (BDM) fully supported for loading and debugging your code universal 6-pin/10-pin BDM connectors support BDM pods from multiple vendors doubles as a BDM pod, (has BDM IN and BDM OUT connectors) D-Bug12 firmware on-chip (same as Motorola's EVB912) permits operation in BDM Pod mode, JMP-EE, and EVB mode program in C, BASIC, or assembler (or any other language available for HC12) fully compatible with ImageCraft ICC12 (68HC12 C cross-compiler) convenient on-board Vfp generator circuit for Flash Erase/Program voltage 500mA 5V regulator on-board, delivers adequate current for most applications

Adapt912B32
Adapt912B32 is functionally identical to the Motorola EVB912B32 Evaluation Board-- with a few significant improvements. It is in a compact, modular "Adapt12" form factor, compatible with prototyping cards, backplanes, and solderless breadboards ("proto boards"), making it a lot more versatile. It also includes a 5-volt regulator, a Vfp generator circuit for Flash Erase/Program voltage, and both RS485 and RS232 transceivers (jumper-selectable) on board. Like the EVB912B32, Adapt912B32 has Motorola's D-Bug12 monitor/debugger resident in Flash. This program has four jumper-selectable modes of operation, invoked when the processor comes out of reset. Modes 1, 3, and 4 require a dumb terminal, or the use of a terminal program on a host computer (PC, Mac, Amiga, workstation, etc.).

Here are a few ways you can use Adapt912:

(1) As a standalone target, you can utilize D-Bug12 to write/debug programs in the 768-byte on-chip EEPROM. Once you are comfortable working with the chip, you can write larger applications and program them into Flash (erasing D-Bug12 first). There is a small write-protected "bootblock" in Flash, which contains the BOOTLOADER code implemented by Mode4, above, so if you wish to re-load D-Bug12 at some later time, it is quite easy to do so. By the way, the Flash is erasable/programmable thousands of times under normal operating temperatures and voltages, so you don't have to worry about wearing it out anytime soon.  A convenient switch is provided to apply Vfp when required.  Since Adapt912B32 module has a Vfp generator on-board, you don't need to provide a 12V regulated supply.  Any DC supply between 8 and 15 V can be used.  The module draws a nominal 50 mA, so a commonly-available 9VDC adapter with a 200mA or higher rating will work fine.  For portable applications, an 8.4 V or higher NiCd pack will be adequate.

(2) As a Background Debug Mode (BDM) Pod, Adapt912B32 functions as an interface between a terminal and any 'HC12 board (target). Just connect the Adapt912B32 "BDM OUT" connector to the target board's "BDM IN" connector via a ribbon cable (supplied with Starter Package). The target board could be another Adapt912B32, an Adapt812, Adapt812DX, Adapt912D60, Adapt912DG128, or any other 'HC12 board that has a 6- or 10-pin BDM interface connector. The host for using the BDM Pod can be any type of dumb terminal, or any computer running a terminal program. The BDM pod will receive its 5V operating power from the target board.

(3) As an Expanded Mode combo, utilizing the Adapt912MX1 RAM+ memory expansion card.  This configuration gives you a lot more memory to work with, and a lot more code development flexibility.  See the Adapt912MX1 page, and Application Note for details.

Starter Package:

fully assembled and tested module, with D-Bug12 and bootloader installed in Flash

module supplied with -RA (H1) and -M (H2) connector options (or you can specify)

disk includes documentation, SBASIC compiler and AS12 assembler

Adapt912B32 User's Guide

full schematic, pinout and dimensional drawing

ADHDR50-F adapter (lets you plug Adapt912 into your solderless breadboard for easy interfacing)

standard 9-pin serial cable

ribbon cable for BDM interface

Order Online at http://www.technologicalarts.ca/index.php

OEM Modules:

• fully assembled and tested module
• includes full schematic, pinout and dimensional drawing
• various connector options available (specify when ordering)
• quantity discounts for 5 or more units
• Order Online at http://www.technologicalarts.ca/index.php