Posts Tagged ‘TS-430’

TS-430 Control Board: IC-1 Waveforms

IC-1 is the main processor chip on the Control Board of the TS-430.  It is a uPD8049c.  This 40 pin chip runs at 5.74 Mhz, and interfaces with virtually every control integrated circuit (IC-2 through IC-6) on the board.  You can see that it is central to the radio’s operation.

Leave a Comment

TS-430 Control Board: IC-3 Waveforms

IC-3 on the control board is an I/O expander chip.  It is a uPD8243c.  This chip is directly compatible with the 8049 processor, and uses instructions received from the processor on pins 8-11 to control 4 output ports. These 4 ports control the PLL Oscillators, and interface with the two data selector chips (IC-4 and […]

Leave a Comment

TS-430 Control Board: IC-2 Waveforms

IC-2 on the control board in an I/O expander chip.  It is a uPD8243c.  This chip is directly compatible with the 8049 processor, and uses instructions received from the processor on pins 8-11 to control 4 output ports. These 4 ports drive the multi-digit florescent display unit.

Leave a Comment

TS-430 Control Board: IC-6 Waveforms

IC-6 is the static RAM chip that holds the band, frequency,mode, memories for long term storage.  It is used particularly when the radio is turned off in order to keep track of where you were operating.  When the rig is turned back on, data is read from the ram chip and the radio is set […]

Leave a Comment

TS-430 Control Board: IC-4 Waveforms

IC-4 is an 8-Channel Data Selector switch that is used to read the status of various switches or buttons from the front of the rig, as well as the microphone. The Processor (IC-1) chooses which data input line to read by setting an address on pins 11-13, and setting the Disable pin low. IC-4 then […]

Leave a Comment