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EM6621 Datasheet(PDF) 5 Page - EM Microelectronic - MARIN SA |
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EM6621 Datasheet(HTML) 5 Page - EM Microelectronic - MARIN SA |
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5 / 69 page  EM6621 03/02 REV. D/444 Copyright 2002, EM Microelectronic-Marin SA 5 www.emmicroelectronic.com Chip TQFP 52 DIL 64 Signal Name Function Remarks 35 35 51 PB[1] Input/output, open drain port B terminal 1 Port B data[1] I/O or Ck[11] output 36 36 52 PB[2] Input/output, open drain port B terminal 2 Port B data[2] I/O or Ck[16] output 37 37 53 PB[3] Input/output, open drain port B terminal 3 Port B data[3] I/O or PWM output 38 38 54 PA[0] Input port A terminal 0 TestVar 1 Event counter 39 39 55 PA[1] Input port A terminal 1 TestVar 2 40 40 58 PA[2] Input port A terminal 2 TestVar 3 41 41 59 PA[3] Input port A terminal 3 Event counter, MSC start/stop control 42 42 60 Buzzer Output Buzzer terminal 43 43 61 Strobe Output Strobe terminal µP reset state or/and port B write or sleep flag out 44 44 62 Vbat = VDD Positive power supply MFP Connection 45 45 63 Vreg Internal voltage regulator Connect to minimum 100nF, MFP connection 46 46 64 Qin/Osc1 Crystal terminal 1 32 KHz crystal, MFP connection 47 47 2 Qout /Osc2 Crystal terminal 2 32 KHz crystal, MFP connection 48 48 3 VSS Negative power supply ref. terminal, MFP connection 49 49 4 C2B Voltage multiplier Not needed if ext. supply 50 50 5 C2A Voltage multiplier Not needed if ext. supply 51 51 6 C1B Voltage multiplier Not needed if ext. supply 52 52 7 C1A Voltage multiplier Not needed if ext. supply Gray shaded areas : Terminals needed for MFP programming connections (VDD, Vreg, Qin, Qout, Test). Figure 3. Typical Configuration Crys ta l L CD D is p la y C1 C1 C1 C4 C3 Vre g V SS Te s t Re s e t V DD (V bat) SE G [20 :1 ] Q in O out C2 C2 C1 A C1 B C2 A C2 B C O M [4:1] VL 1 VL 2 VL 3 E M 6621 A ll C apacitors 100nF Port A S trobe Bu z ze r Po rt B Po rt S P |
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