EM91455CK ELAN Microelectronics Corp, EM91455CK Datasheet
EM91455CK
Related parts for EM91455CK
EM91455CK Summary of contents
Page 1
GENERAL DESCRIPTION The EM91455 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 3 sets memories. The EM91455 provide modern LCD driver's series data output port, which can display modern function operating ...
Page 2
... EM91455 Pin Assignment EM91455AP 1 COL5 2 COL4/KT 3 COL3 4 COL2 5 COL1 6 XIN 7 XOUT 8 XMUTE 9 VSS EM91455CK NC 1 COL5 2 COL4/KT 3 COL3 4 COL2 5 COL1 6 XIN 7 XOUT 8 XMUTE 9 VSS 10 HFI 11 Keyboard Arrangement COL1 ROW1 ROW2 ROW3 ROW4 */T * This specification are subject to be changed without notice. TONE/PULSE DIALER WITH LCD INTERFACE ...
Page 3
FUNCTIONAL BLOCK DIAGRAM COL1 Keyboard COL2 COL3 interface COL4/KT (column) COL5 I/O circuit XMUTE XIN Oscillator XOUT Keyboard ROW1 interface (Row) ROW4 PIN DESCRIPTIONS Symbol ROW1~ROW4 Keyboard scan pins of row group. In idle state (HKS is “High” and HFO ...
Page 4
Symbol HKS Control signal inputs pin that is corresponding hook switch status. When handset was left from cradle, this pin must be connected to “Low” level to operate all functions. Otherwise, this pin must be connected to “High” level to ...
Page 5
FUNCTION DESCRIPTIONS Dialing signal selection The EM91455 series incorporated a special keyboard scanning function that is connecting a resistor (typically is 560 Kohms) on keyboard scan pin to select many telephone specifications. The specifications are described as following : a. ...
Page 6
Redialing: After normal dialing, directly keying F key (or On-Off hook once) and keying RD key on keyboard. The numbers that are stored into LNB memory will be dialed output. Repertory memory The EM91455 series incorporated several sets repertory memory ...
Page 7
Flash (F) key operation The Flash (F) key is designed to break telephone line temporarily. After F key is depressed, this dialer will send a flash signal to break line 600 ms, 300 ms, 100 ...
Page 8
Operating flow chart HF (4) On-hook Hand-free State HD (6) HD On-hook Hold-line State <Note> Handfree HD = Hold Truth table Operating state (1) On-hook, idle state (2) Off-hook line (3) Off-hook, HF line (4) On-hook, HF ...
Page 9
Keypad,SDO format and LCD display reference table: Keypad bit5 “*”/ */”T” HOLD ...
Page 10
Dialing via LOCK function Conventional key lock mode. (Connects a resistor on COL1 pin to VDD) • Off hook (or turn on HF function) • Keying : the first number (d1) ...
Page 11
ABSOLUTE MAXIMUM RATINGS Items Power supply voltage Input voltage range Operating temperature Storage temperature Power consumption DC ELECTRICAL CHARACTERISTICS (Ambient temperature =2.5V unless otherwise noted, all voltages referenced Parameter Operating voltage Operating current(HKS=0) ...
Page 12
AC ELECTRICAL CHARACTERISTIC (Ambient temperature =2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz) DD Parameter Keyboard debounce time Key tone signal: frequency duration Pause time Pulse to Tone waiting time Flash time Pulse rate ...
Page 13
TIMING DIAGRAM HKS 2 KEY IN Tdb KT XMUTE SDO PO DTMF OSC. Tdly HKS 2 KEY IN Tdb KT XMUTE SDO PO DTMF OSC. * This specification are subject to be changed without notice. TONE/PULSE DIALER WITH LCD INTERFACE ...
Page 14
LNB=2,3 HKS RD/P KEY IN Tdb KT XMUTE SDO PO DTMF OSC. Tdly LNB=2,3 HKS RD/P KEY IN Tdb KT XMUTE SDO PO DTMF OSC. Tdly * This specification are subject to be changed without notice. TONE/PULSE DIALER WITH LCD ...
Page 15
HKS 2 KEY IN KT XMUTE SDO PO DTMF OSC. HKS 2 KEY IN KT XMUTE SDO PO DTMF OSC. Figure 6. Pulse to Tone (P T) operating timing HKS F KEY IN Tdb KT XMUTE SDO PO DTMF OSC. ...
Page 16
HKS KEY IN KT SDO <Note>L=Least significant bit,M=Most significant bit, SB=START bit , SPT=STOP bit HKS HD HF KEY IN HFO HDO XMUTE SDO PO MELODY @ : It can be triggled by extension telephone set for hold function release ...
Page 17
RING Ton DRING HKS RMUTE * The external ring detection circuit must send a low signal at the total ring cycle (Ton and Toff) RING DRING HKS RMUTE * This specification are subject to be changed without notice. TONE/PULSE DIALER ...
Page 18
APPLICATION CIRCUIT : CONTROL AND IPP DETECT * This specification are subject to be changed without notice. TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION 13 12 DRING DRING RMUTE 14 11 HFI HFO HFO 15 10 DTMF VSS ...
Page 19
APPLICATION CIRCUIT : KEY BOARD AND HOLD * This specification are subject to be changed without notice. EM91455 SERIES TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION 9.24.1998 19 ...
Page 20
APPLICATION CIRCUIT : LCD DRIVER USE EM32117 1 SEG0 2 SEG1 3 SEG2 4 SEG3 5 SEG4 6 SEG5 7 SEG6 8 SEG7 9 SEG8 10 SEG9 11 SEG10 12 SEG11 13 SEG12 14 SEG13 15 SEG14 16 SEG15 17 ...
Page 21
APPLICATION CIRCUIT : LCD DRIVER USE EM32100 COM3 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 * This specification are subject to ...
Page 22
PACKAGE INFORMATION Example : EM 91455 P (1) (2) (3) (1) ELAN MICRO. pefix (2) Type number (3) Package code: 18/20/28 Lead Plastic Package PDIP MILIMETERS INCHES DIM MIN. MAX. MIN. MAX 5.334 - .210 ...
Page 23
Lead Plastic Package-Skinny PDIP (skinny) MILIMETERS DIM MIN. MAX 4.752 A1 0.381 - B 0.356 0.558 B1 1.27 1.778 C 0.204 3.556 D 25.90 26.67 E 7.620 8.255 E1 6.223 6.604 e 2.286 ...
Page 24
SDIP Package DIM * This specification are subject to be changed without notice. TONE/PULSE DIALER WITH LCD INTERFACE SDIP MILIMETERS MIN. MAX. MIN 5. 0.381 - ...