05-27-2005, 06:43 PM
Je vous mets la réponse d'un gus de chez willem :
I'm pretty sure you need an adapter for that board. There are three pin differences between 2732 and HN2532 :
The only 2532's I've seen needed the following pin swaps:
2732 2532
20 21
18 20
21 18
The first adapter I made was just a few 24pin sockets stacked together with the pin swaps.
You're also going to have a problem with VDDp voltage drop. Hitachi 2532 can draw up to 150mA and the transistor switch can't handle that much current (actually it's a Vce(sat) problem). I have a relay modification that fixes that problem. You can check the magnitude of the problem by setting up your board for 2732 and doing the hardware test (tab). Click on VCC and OE and measure VCC on the device. It'll probably be in the 3.5-4.5V range and this is too low. 4.5V isn't sufficient to give you reliable parts.
I can tell you how to add a relay to your board and add more VCC options (and fix VCC generation - your board may have a steering diode and another to compensate for the voltage drop in the VDDp transistor).
I'm pretty sure you need an adapter for that board. There are three pin differences between 2732 and HN2532 :
The only 2532's I've seen needed the following pin swaps:
2732 2532
20 21
18 20
21 18
The first adapter I made was just a few 24pin sockets stacked together with the pin swaps.
You're also going to have a problem with VDDp voltage drop. Hitachi 2532 can draw up to 150mA and the transistor switch can't handle that much current (actually it's a Vce(sat) problem). I have a relay modification that fixes that problem. You can check the magnitude of the problem by setting up your board for 2732 and doing the hardware test (tab). Click on VCC and OE and measure VCC on the device. It'll probably be in the 3.5-4.5V range and this is too low. 4.5V isn't sufficient to give you reliable parts.
I can tell you how to add a relay to your board and add more VCC options (and fix VCC generation - your board may have a steering diode and another to compensate for the voltage drop in the VDDp transistor).
Fuerza el canut !