RCX Internals

Hitachi H8/3292 Basic Specs and Images

Much of the information on this page is from Hitachi's manual on the H8/3292. Therefore they deserve full credit for the wonderful illustrations and information except were noted. They can be found on the web at http://www.hitachi.com

The RCX, which is nicknamed "the brick", is basically a miniature computer. The heart of the RCX is a single chip microcomputer made by Hitachi. The following is a listing of the specifications of the Hitachi Chip. Much of this information is from the product guide available from Hitachi here .

Product Name	H8/3292
Exact Name	HD6433292VF10
Package	64-Pin QFP (FP-64A)
ROM	Mask ROM (As opposed to a PROM)
Speed	10 MHz
ROM (Inside Chip)	16 kb (16,000 bytes)
RAM (Inside Chip)	512 bytes
Registers	8 16-bit or 16 8-bit, can be used either way

Pin Arrangement of the H8/3292	Click here for small image	Click here for large image

For a table of pin functions in each of the 3 modes, see the Hitachi manual here.

The three modes are: Mode 1 = Expanded Mode with on-chip ROM disabled Mode 2 = Expanded Mode with on-chip ROM enabled Mode 3 = Single-chip mode

Circled Area	Name	Chip Markings	Link to close up version
1	NEC RAM Module	D43256BGU-70LL 0017XD063	Click Here for Close Up

2	A bank of flip flops	74HC377D D0479ME HRn0005	Click Here for Close Up

3	Hitachi H8/3292 Single Chip Microcomputer	71748.51A HD6433292B02F 0030 JAPAN	Click Here for Close Up

4	A bank of NAND gates	74HC10D D1943PL Hnn0014C	Click Here for Close Up

5	Three identical chips. Each one controls a single motor.	MLX10402CA 004802 1400	Click Here for Close Up


	See the table below the image for information about the labeled areas.