Properly Installing the Programmer Hardware

1.3.5Integrated Circuit (IC) Insertion

ICs may be inserted or removed while power is applied to the programmer; however:

1)When using the microcontroller programmer, never use more than one IC socket at a time. Damage to the IC or the programmer could result.

2)Never insert or remove the IC while the red LED is on. Dam- age to the IC or the programmer could result.

3)TMS devices contain circuits to protect their inputs and out- puts against damage due to electrostatic discharges of up to 2 kV. However, you should employ the usual precautions when handling MOS devices, such as storing the device in conductive foam and grounding yourself when handling them.

For the microcontroller programmer, decide which of the sockets (U1, U2, U3, U4, or U5) to use for your device. Figure 1±3, shows the circuit board and IC sockets.

Figure 1±3. Socket Identification

2764, 27128, and 27256

 

 

 

 

 

 

 

pin 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2732 pin 1

 

 

 

 

 

2764

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

27128

 

 

 

 

 

 

2732

 

 

 

 

 

27256

 

 

 

 

Set to left for 2732

pin 1 { Set to right for 2764, 27128, and 27256

370Cx10 DIP

J2

U1 U2

370Cx5x PLCC

370Cx10 PLCC

U3 U4U5

370Cx32 PLCC

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Image 25
Texas Instruments TMS370 manual Integrated Circuit IC Insertion, ±3. Socket Identification