Datasheet Details
| Part number | BU8307CS |
|---|---|
| Manufacturer | ROHM |
| File Size | 292.96 KB |
| Description | Pulse / tone dialer |
| Datasheet |
 BU8307CS Datasheet
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General Description
(1) ROW1 to ROW4 and COL1 to COL4 These are the keyboard input pins.
They can be connected to a 3 4 (2 of 7) standard keypad, or a 4 4 keypad.
Key input becomes valid by either shorting a single ROW input and a single COL input, or setting a single ROW and a COL input to LOW at the same time.
Key Features
- 1) The chip includes both a pulse and tone dialer, making it possible to dial in either pulse or tone mode. 2) A wide operating voltage range enables direct powering by line current. The voltage range guaranteed for both pulse and tone dialing is 2.5V to 5.5V. 3) A built-in memory enables redialing of up to 32 digits. Note: In tone mode, the memory itself uses one digit, so please be aware that a maximum of 31 digits can be redialed. 4) The chip conforms to the standards of Japan, AmeriFBlock di.