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The ModCon PCB contains everything to build professional
microcontroller applications. Shown in the photo above:
Reset Circuit - The reset button is shown at the top left. Just to the right
of the crystal near the reset button is where the reset circuit is located.
Both of the popular reset chips, the MC34064 and DS1233 are supported.
- The Bus
A and Bus B connectors provide nearly all HC11 pins on a stackable bus
structure. The pin arrangement is compatible with the EVBU development
systems by making a split adapter cable. Extra pins are provided for end
user applications.
- The SCI
connector is used for RS-232 communication (via our RS-232 kit, included
with our package deals). This connector is also used for MIDI communications
through our MIDI Gizmo product.
- The ModCon's
14-pin SPI connector allows for additional expansion by including extra
control lines to make interfacing easier. Included on this connector are
Reset, XIRQ, IRQ, OC4 and OC5 as well as two spare connections.
-
The ModCon includes four servo motor connections. As shipped,
the ModCon is configured for use with Airtronics type servo connectors.
The Futaba standard is also supported with a simple modification.
- The ModCon's
first two configuration switches control the HC11's operation mode (normal/special
and single/multi-chip). The two switches on the right control XIRQ and
PE0, supporting the Buffalo Monitor or other functions.
- Either
our 32K RAM or user EPROM chips can be used with the ModCon.
- The power
connector's center two pins supply power to the ModCon. By cutting a bow tie,
pin 3 becomes RAM power, while pin 2 supplies power to the rest of the
ModCon. This makes use with battery supplies for the RAM easier.
Documentation
All our board level products include a printed assembly & reference guide.
Documentation on the Buffalo monitor is provided with your order.
Motorola provides the following manuals for the HC11 processor provided.
Specifications
| Weight, ModCon Full | 1.8oz |
| Weight, RS-232 Adapter | 1.9oz |
| Size, ModCon | 3" x 2.5" |
| Power Consumption, ModCon Full Kit | 32mA @ 5V |
| Power Consumption, RS-232 Adapter | 8mA @ 5V |
| Memory, HC11 on chip | ROM: 12K, EEPROM:512 bytes, RAM: 512 bytes, ModCon socket: 32K (ROM, RAM or EEPROM) |
| OnChip peripherals | RS-232,Counters, Timers, pulse accumulator, SPI, parallel I/O, analog input |
| Processor speed | 8MHz crystal, 2MHz internal E-clock |
Connector Pin Descriptions
For a convenient page detailing all the I/O lines on the ModCon click
here.
Save the page and edit it for your project so you know what each
line is used for.
ModCon BusA Connector
| Description |
Pin |
|
Pin |
Description |
| GND |
1 |
 |
2 |
MODB/VSTBY |
| MODA/LIR |
3 |
|
4 |
STRA/AS |
| E |
5 |
|
6 |
STRB/R/W |
| N/C |
7 |
|
8 |
N/C |
| PC0/AD0 |
9 |
|
10 |
PC1/AD1 |
| PC2/AD2 |
11 |
|
12 |
PC3/AD3 |
| PC4/AD4 |
13 |
|
14 |
PC5/AD5 |
| PC6/AD6 |
15 |
|
16 |
PC7/AD7 |
| RESET |
17 |
|
18 |
XIRQ |
| IRQ |
19 |
|
20 |
PD0/RxD |
| PD1/TxD |
21 |
|
22 |
PD2/MISO |
| PD3/MOSI |
23 |
|
24 |
PD4/SCK |
| PD5/SS |
25 |
|
26 |
NC |
| PA7/OC1 |
27 |
|
28 |
PA6/OC2 |
| PA5/OC3 |
29 |
|
30 |
PA4/OC4 |
| Y0 |
31 |
|
32 |
Y1 |
| +5 |
33 |
|
34 |
+5 |
|
ModCon BusB Connector
| Description |
Pin |
|
Pin |
Description |
| GND |
1 |
|
2 |
GND |
| VCC |
3 |
|
4 |
VCC |
| Spare |
5 |
|
6 |
Spare |
| Spare |
7 |
|
8 |
Spare |
| VRL |
9 |
|
10 |
VRH |
| PE3 |
11 |
|
12 |
PE7 |
| PE2 |
13 |
|
14 |
PE6 |
| PE1 |
15 |
|
16 |
PE5 |
| PE0 |
17 |
|
18 |
PE4 |
| PB1/A9 |
19 |
|
20 |
PB0/A8 |
| PB3/A11 |
21 |
|
22 |
PB2/A10 |
| PB5/A13 |
23 |
|
24 |
PB4/A12 |
| PB7/A15 |
25 |
|
26 |
PB6/A14 |
| PA1/IC2 |
27 |
|
28 |
PA0/IC3 |
| PA3/OC5 |
29 |
|
30 |
PA2/IC1 |
| Y2 |
31 |
|
32 |
Y3 |
| MEM PWR |
33 |
|
34 |
MEM PWR |
|
ModCon 14-pin SPI Connector
| Description |
Pin |
|
Pin |
Description |
| +5 |
1 |
|
2 |
GND |
| XIRQ |
3 |
|
4 |
SS |
| IRQ |
5 |
|
6 |
SCK |
| Reset |
7 |
|
8 |
MOSI |
| N/C |
9 |
|
10 |
MISO |
| OC4 |
11 |
|
12 |
OC5 |
| N/C |
13 |
|
14 |
N/C |
|
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