BL1101 Series Tone/pulse dialer with Hand-free and lock functions Description BL1101 series is a single chip dialer IC using Si-gate CMOS process, it can provide the necessary signal for either pulse or DTMF dialing, it features Hand-free dialing, first number “0” and “9” dialing lock and redialing (at most 32bit) etc., it is compatible with W91330 series. C1 C2 C3 C4 NC Vss XT XT T/PMUTE HF1 1 20 2 19 3 18 4 17 5 BL1101A 16 15 6 14 7 13 8 12 9 10 11 R4 R3 R2 R1 VDD MODE DTMF DP HKS HFO C1 C2 C3 C4 LOCK Vss XT XT T/PMUTE HF1 18 1 2 17 16 3 4 15 5 BL1101 14 13 6 12 7 8 11 9 R4 R3 R2 R1 VDD MODE DTMF DP HKS HFO PDIP 20 PDIP 20 C1 C2 C3 C4 NC Vss XT XT T/PMUTE 1 20 2 19 3 18 4 17 5 BL1101AL 16 15 6 14 7 13 8 9 12 10 11 R4 R3 R2 R1 VDD MODE DTMF DP HKS PDIP 18 C1 C2 C3 C4 LOCK Vss XT XT T/PMUTE 1 18 2 17 16 3 15 4 5 BL1101L 14 13 6 7 12 8 11 9 R4 R3 R2 R1 VDD MODE DTMF DP HKS PDIP 18 Features Operating voltage: 2.0V~5.5V DTMF/Pulse selection with switch Easy operation with Redial, Flash and Pause functions Power on reset on-chip Uses 4×4 keyboard Pause, P-T(pulse to tone ) can be stored as a digit in memory Flash time: 98ms, 600ms Minimum tone output duration: 100 ms, Minimum inter tone pause: 100ms Uses 3.57945 MHz crystal or ceramic resonator The dial-out of start number “0” or “9” can be locked Package in 18 or 20-pin plastic DIP Application Uses as dialing circuit in telephone set, complete relevant Typical application circuit Address： No.810, YiShan Road ShangHai China Tel：86-021-64850700 Fax：86-64852222 Zip.200233 BL1101 Series Tone/pulse dialer with Hand-free and lock functions RING */T 7 4 1 0 8 5 2 * 9 6 3 250V off hook R/P F1 F2 D5 D6 R4 R3 R2 R1 C4 C3 DP 13 22K BL1101 30pX2 R3 33K R4 3.3K T2 R6 3K 300K HKS T3 D8 5.1V 12 + Vss V DD 16 Pulse VDD LOCK R9 470K C2 0.1µ C4 100µ 4.7µ R10 DTMF 14 Tone 10K R11 HFO 11 T/P MUTE 9 75 T16 T4 22K HFI Latch“0”“9” Nomal Latch“0” V DD T3 10 C3 0.1µ T1 R5 20M R8 XT MODE D1~D4 on hook R1 200K R7 1M XT C6 R2 R21 10K C2 C1 C5 TIP Speech network hand free Address： No.810, YiShan Road ShangHai China Tel：86-021-64850700 Fax：86-64852222 Zip.200233