F1 Board features
|
MCU |
68HC11F1 (PLCC68). Socketed so it can be replaced easily, if needed. |
|
Crystal |
16MHz (4MHz bus) or 8MHz
(2MHz bus) upon request (no cost difference). |
|
Operating Modes |
Boot Mode (for re-programming it) and Expanded Mode (for normal operation). |
|
Mode
Selection |
Two conveniently placed push buttons for Reset in Expanded Mode or in Boot Mode. |
|
Internal RAM |
1024 Bytes mapped from $0000
to $03FF |
|
Internal EEPROM |
512 Bytes mapped at any 4KB page boundary (or completely disabled). |
|
External RAM |
32 KB mapped from $0000 to $7FFF
(The range $1000-$105F is by default occupied by internal MCU registers which are movable to any 4KB page boundary). Socketed. |
|
External
EEPROM |
32 KB mapped from $8000 to $FFFF (Software and Hardware write-protection). Socketed. |
|
A/D Channels |
Eight
8-bit A/D channels. |
|
SCI |
One SCI port (bypassing the MAX232 for 5V connections). |
|
SPI |
One SPI port. |
|
RS-232 Port |
On-board MAX232 (or compatible)
for direct connection to RS-232 of PC or other devices. |
|
LCD Port |
On-board 14-pin LCD port for L1672 or pin-compatible LCD.An LCD is optional. |
|
LCD
Contrast |
Adjustable with on-board trimmer. |
|
Reset Monitor |
On-board reset circuit/monitor. |
|
DIP connector |
DIP connector provides all otherwise
unused pins. |
|
Power Supply |
On-board voltage regulation allows you to connect anything between 9 to16 VDC. |
|
RPP |
Reverse-Polarity Protection
prevents damage if power is not properly connected. |
|
Schematics |
Full schematics and PCB layout are supplied as part of the board's documentation. |
|
Dimensions |
10.1cm (L)
[4 inches] x 5.8cm (W) [2 1/4 inches] x 2.5cm (H) [1 inch] |
|
Power Consumption |
37mA (42mA with LCD attached) under normal operation. |
|
Software |
Comes
with a CD with our assembler (ASM11), loader (B11), OS11 (S19 object only), soft manuals, examples! |
CLICK HERE TO SEE WHAT YOU GET
This
board is FULLY ASSEMBLED AND TESTED and is suitable both for development and low-volume production. We have been using it as the main
controller board in several of our custom-made products, but we feel it is also ideal for students, hobbyists, etc., and for any application
where frequent code changes may be required.
An on-board memory-mapped LCD port for direct connection of a L1672, or M1632, or any
pin-compatible LCD, is available for testing your LCD-related code. Or, connect a (short) flat ribbon cable to place the LCD away
from the controller board. Using a custom flat ribbon cable also allows you to use any LCD that is not necessarily pin-compatible
but uses the same 14 pins in a different order but with the same or compatible timing specifications. Included sample code will show
you how to use the LCD without losing any of the underlying RAM. The LCD's display contrast is manually adjustable via the on-board
variable resistor (trimmer). An LCD is optional.
The on-board MAX232 (or compatible) allows for RS-232 communications through a separate
3-pin port. The SCI pins are also available through the DIP connector bypassing the MAX232 for use as simple I/O pins, if needed.
The
board can be used stand-alone (e.g., flat on the its back – for development), or perpendiculary inserted into a motherboard using
standard DIP connectors (for production, or integration to your design). All pins not used for memory access are available through
DIP connectors, except for /XIRQ which is reserved for future use. With the on-board voltage regulation you only need to supply from
9 to 17V DC.
Miscellaneous Notes:
- We intentionally used discrete components where possible in order to make it easier to modify or
repair if it ever needs to. Yet, we kept the size so small even SMT boards with all of the above features will envy this one.
- All
MCU pin tracks start off on the bottom layer only.
- The DIP connector header is spaced so that it is impossible to connect incorrectly
(idiot-proof).
- PCB silkscreen provides all needed information for quick reference.
DIP HEADER PINOUT
|
DIP Header No. |
PIN |
Description |
DIP
Header No. |
PIN |
Description |
|
PL1 |
1 |
PACC |
PL2 |
1 |
/PROG (Remote boot reset) |
|
|
2 |
OC2 |
|
2 |
XOUT |
|
|
3 |
OC3 |
|
3 |
/RESET |
|
|
4 |
OC4 |
|
4 |
/IRQ |
|
|
5 |
OC5 |
|
5 |
GND |
|
|
6 |
IC1 |
|
6 |
GND |
|
|
7 |
IC2 |
|
7 |
A/D
7 |
|
|
8 |
IC3 |
|
8 |
A/D 3 |
|
|
9 |
GND |
|
9 |
A/D 6 |
|
|
10 |
GND |
|
10 |
A/D 2 |
|
|
11 |
Port G0 |
|
11 |
A/D 5 |
|
|
12 |
Port G1 |
|
12 |
A/D 1 |
|
|
13 |
Port
G2 |
|
13 |
A/D 4 |
|
|
14 |
Port G3 |
|
14 |
A/D 0 |
|
|
15 |
CSIO2 |
|
|
|
|
|
16 |
CSIO1 |
|
|
|
|
|
17 |
SCI RX |
PL4 |
|
14-pin
standard LCD PORT |
|
|
18 |
SCI TX |
|
|
(L1672/M1632 or compatible) |
|
|
19 |
SPI SCK |
|
|
|
|
|
20 |
SPI SS |
PL3 |
1 |
RS232
TX |
|
|
21 |
SPI MOSI |
|
2 |
GND |
|
|
22 |
SPI MISO |