8042AH
features of the 8242WA
Contact factory for current code revision available in all versions of the 8242 product lines
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UPI-41AH 42AH
Table 1 Pin Description
Symbol DIP Pin No 1 39 PLCC Pin Type No 2 43 I Name and Function
TEST 0 TEST 1
TEST INPUTS Input pins which can be directly tested using conditional branch instructions FREQUENCY REFERENCE TEST 1 (T1) also functions as the event timer input (under software control) TEST 0 (T0) is used during PROM programming and ROM EPROM verification It is also used during Sync Mode to reset the instruction state to S1 and synchronize the internal clock to PH1 See the Sync Mode Section INPUTS Inputs for a crystal LC or an external timing signal to determine the...
