PS081 datasheet(141/155 Pages) AMSCO

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7-2

PSØ81

Miscellaneous

7.1

Migration from PS08 to PS081

The following table shows the differences between PS08 and PS081:

PS08

PS081

EEPROM Program Space:

1Kx8 bit

2Kx8 bit

EEPROM User Space:

2x24 bit

16x24 bit

RAM User Space:

32x24 bit

48x24 bit

Inputs:

max. 5

max. 21

GPIOs (Mult_IO):

Configuration Registers:

External LCD via SPI:

yes

Opcodes:

same as PS08 plus:

- Anti vibration filter

- Hysteresis

- Round

- Gramm to Stone conversion

Package:

QFN56

Dice:

2770x2520µm²

Pad: 116µm x 90µm

2370x3470µm²

Pad: 116µm x 90µm

Hardware changes:

From a hardware point of view the changes are rather small. If the packaged version is used

(QFN56), PS08 can be replaced by PS081 on existing PCBs. Only thing to pay attention to is that Pin

13 and 15 have changed, this is Pin 13 from VCC --> Mult_IO5 and Pin 15 GND --> Mult_IO4.

So to replace PS08 by PS081 on an existing PCB, there are 2 possibilities:

don‘t connect pin 13 and 15 with PS081

or: connect them, but configure them both as inputs (configreg_17, en_io4 and en_io5)

Software changes:

PS08 has 17 configuration registers (configreg_00 to configreg_16). PS081 has 2 more and confi-

greg_16 has changed. In other words, you have to put a configuration in the additional registers, in

the first instance you can just take the default values recommended in the data sheet.

Some very few opcodes have changed, e.g. no2lcd in the way the parameters are given. In PS081

there are additional opcodes available such as median, hysteresis or round. A description of the new

opcodes and the changes you find in the online help of PS081 Assembler version. There‘s also an

updated version for the evaluation software.

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