M5295AFP

M5295AL/AP/AFP Watchdog Timer REJ03D0780-0200 Rev.2.00 Jun 15, 2007 Description M5295A is a semiconductor integrated circuit which is designed for system reset to detect +5 V power supply. This IC keeps the operation microcomputer watching. When the system is abnormal, it generates reset output until the system returns to normal states of the system. It is possible to vary the two detective voltage by connecting the resistor, so it is suitable to high quality and high performance system. Features Watchdog timer Power on reset timer Low circuit current: 0.8 mA (Typ, VCC = 5 V) Wide supply voltage range: VCC(max) = 15 V Application Microcomputer system Recommended Operating Condition Supply voltage range: 4 V to 15 V Rated supply voltage: 5 V Block Diagram F.F F.F – + – + W.D.T F.F 49.6k – + 20.4k 51.2k + – 18.8k 1.24V Reference voltage generator circuit 20k 30k 1 WD 2 TC 3 RST1 4 GND 5 ADJ1 678 VCC RST2 ADJ2 REJ03D0780-0200 Rev.2.00 Jun 15, 2007 Page 1 of 12 M5295AL/AP/AFP Pin Arrangement M5295AL 8 ADJ2 7 RST2 6 VCC 5 ADJ1 4 GND 3 RST1 2 TC 1 WD (Top view) Outline: PRSS0008AA-A (8P5) [AL] M5295AP M5295AFP WD 1 8 ADJ2 TC 2 7 RST2 RST1 3 GND 4 6 VCC 5 ADJ1 (Top view) Outline: PRDP0008AA-A (8P4) [AP] PRSP0008DE-C [AFP] (recommend) PRSP0008DA-A (8P2S-A) [AFP] (not recommend for new design) REJ03D0780-0200 Rev.2.00 Jun 15, 2007 Page 2 of 12 M5295AL/AP/AFP Absolute Maximum Ratings Item Supply voltage Input voltage Output voltage Output curr...