Description
(1) ROW1 to ROW4 and COL1 to COL4 These are the keyboard input pins.
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.
BU8307CS_Rohm.pdf
