High-Performance 8-Bit
CMOS Single-Chip Microcontroller SAB80C535N or SAB C515 LN with 256 x 8 internal RAM. Most
instructions execute in 1 µs (750 ns). Six 8-bit I/O ports, one input port for digital or
analog input. 4 µs (3 µs) multiply and divide digital or analog input. External memory
expandable up to 128 Kbytes. Three 16-bit timer/counters. Boolean processor. Highly
flexible reload, capture, compare capabilities. Backwardly compatible with SAB 8051.
Functionally compatible with SAB 80515. Full-duplex serial channel. Idle and power-down
mode. Twelve interrupt vectors, four priority levels. 8-bit A/D converter with 8
multiplexed inputs and programmable internal reference voltage. 16-bit watchdog timer.
Memory map:
32 k Static
Ram
32 k
EPROM with monitor program
Additional hardware:
I2c PCF8583 Clock/Calendar with 3 Volt Lithium backup battery.
I2c PCF8574A for connection of LCD-display. I2c PCF8574A for connection of keyboard. I2c
82B715 extender. MAX232 level converter for RS232. 12 MHz crystal. Automatic reset.
Internal or external reference for analog inputs. Din 41612 Model C connector for
connection to a backplane.
535-I2c-mainboard
with LCD-display board
On the left a
power led,
RS232-connector, LCD- and keyboard-connector, I2c-mini-DIN-connector and a
reset-connector.
I2c-connection:
 |
Mini-DIN connector
for I2c-signals. |
| 1 |
+5
Volt |
| 2 |
+5
Volt |
| 3 |
SCL |
| 4 |
SDA |
| 5 |
INT |
| 6 |
GND |
Below:
Connector on 535-I2c-mainboard.
Box-header 20 connections.
PCF8574A (70h)
LCD-display |
PCF8574A (72h)
Keyboard |
| P0 |
P2 |
P4 |
P6 |
GND |
+5 V |
P0 |
P2 |
P4 |
P6 |
| P1 |
P3 |
P5 |
P7 |
GND |
+5 V |
P1 |
P3 |
P5 |
P7 |
Below:
Connection PCF8574A (address 70h and 72h) on 515/535-mainboard to LCD-display and keyboard
| LCD-display |
Keyboard 4 x 4 |
| P0 |
DB4 |
P0 |
Row0 |
| P1 |
DB5 |
P1 |
Row1 |
| P2 |
DB6 |
P2 |
Row2 |
| P3 |
DB7 |
P3 |
Row3 |
| P4 |
RS |
P4 |
Column0 |
| P5 |
R/W |
P5 |
Column1 |
| P6 |
NC |
P6 |
Column2 |
| P7 |
E |
P7 |
Column3 |
Connector between
PC and 515/535-mainboard
PC: |
Female subD 9 Connector
seen from the front. |
| 4, 6
and 8 |
wired
together |
| 2 |
white |
| 3 |
red |
| 5 |
blue |
80C535-
main board: |
Male subD 9 Connector
seen from the rear. |
| 2 |
red |
| 3 |
white |
| 5 |
blue |
The Dutch flag is Red/White/Blue!!
Monitor program
for 80C535
There are
three different boards, the 80C535, the 535-I2c and the 535-485.
A picture of the 535-485-board working with the BenBus-protocol for RS485 with Bascom-8051.
Edge of
the 535-485-board. In the middle the two RJ45-connectors, at the left
three jumpers for terminating
the RS485-line and at the right the RS232-connector.
535-485-board.
On the left 2 x RS485 and 1 x RS232.
Up till
now there are three different boards:
| Board-name |
RS232 |
RS485 |
PCF8574 |
82B715 |
PCF8583 |
| 80C535 |
 |
|
|
|
|
| 535-I2c |
|
|
|
|
|
| 535-485 |
|
|
|
|
|
Pin-layout of
SAB80C535/C515 LN
PLCC68-socket
numbering |
