= HF8V = / = SP8WJT = / = SP0106RZ =

HF-1469


PROJECT: HF-1469
DESCRIPTION: Mobile EEPROM module 4KB
STATUS: u
DOCUMENTATION: TM
PCB: TPD42236
DIMENSIONS: 12 x 11 mm (without connector)
CHIP: 24C32
SUPPLY VOLTAGE: 3.3V/5V (1.8-5.5V)
MAX CURRENT:
CAPACITY: 4 KB
INTERFACE: HF-10032
FILE SYSTEM: THFS8
SEGMENTS: 16
SYSTEM SEGMENTS: 1
USER SEGMENTS: 15
MEDIA DESCRIPTOR: 0x2432
VOLUME ID: see table
MEMORY MODULE: see table


Modules made:
PROJECT
DESIGNATOR		 MM VOLUME ID PCB STATUS LOC. REMARKS
HF-1469#1 MM-223 0000-002A TPD42236#1 u PM
HF-1469#2 MM-224 0000-002B TPD42236#2 u PM
HF-1469#3 0000-002C TPD42236#4 (p) p CV planned, kit prepared, PCB cutted
HF-1469#4 0000-002D TPD42236#5 (p) p CV planned, kit prepared, PCB cutted
HF-1469#5 0000-002E TPD42236#6 (p) p CV planned, kit prepared, PCB cutted
HF-1469#6 0000-002F TPD42236#7 (p) p CV planned, kit prepared, PCB cutted




Project Info

Small mobile memory used in 8-bit digital systems, especially in HF-6030 system in SLOT B with HF-10032 serial I2C interface.
HF-1469 is formatted in my THFS file system.

I think 4KB EEPROM is smallest practical memory. In lower density EEPROMS addressing mode is 1 byte only, so other driver must be used.

Formatting memory

Before first use HF-1469 in THOS-1 operating system, memory must be formatted with system data structure loaded into segment 0. Both source code [1] and binary [2] are provided. In this template few things can be optionally entered: 32-bit VOLUME ID (offset 02-05), MM module number, this is my system to enumerate memory modules (offset 0xE0) and VOLUME_NAME (offset 0xF0) which is typically HF project number. If choosen drive is not formatted properly THOS-1 will respond with 0x90 error code (DRIVE_NOT _READY).


Sources:

[1] 2432.ASM
[2] 2432.BIN


Prefix 15

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