BIXOLON SRP-270 service manual Reset Circuit, Reset Block Diagram

SRP-270

4-3-2 RESET Circuit

Reset signal is a signal in order to start-up CPU under Power-on. Reset circuit uses a reset ICTL7705ACD (U5). When +5Vdc is fallen under 4.3Vdc by Power-off, reset signal prohibits the system from misoperating by lowering down to 0V.

[Figure 4-4 Reset Block Diagram]

5ms

[Figure 4-5 Reset Waveform]

Rev. 3.02 - 32 -