E1217X ATMEL [ATMEL Corporation], E1217X Datasheet
E1217X
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E1217X Summary of contents
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... Motor Fast-test Function Description The e1217X is an integrated circuit in CMOS silicon gate technology for analog watches. It consists of a 32-kHz oscillator, frequency dividers down to 1/64 Hz, output pulse formers and push-pull motor drivers. Integrated capacitors are provided (select- able mask option) for tuning of the crystal. Low current consumption and high oscillator stability are enabled by an on-chip voltage regulator ...
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... MOT 1 RESET TEST e1217X e1217X 3 4 Chip size 1.06 mm ´ 1.02 mm Pad size: 112 µm ´ 112 µm Pad window: 100 µm ´ 100 µm Function Negative supply voltage Positive supply voltage Oscillator input/output Motor drive outputs ...
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... DD SS The e1217X contains two push-pull output buffers for driving bipolar stepping motors. During a motor pulse, the n-channel device of one buffer and the p-channel device of the other buffer are activated. The p-channel devices of both buffers are active (see Fig- ure 3) between the two pulses. ...
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... RESET input current Motor Outputs Motor output current Motor period Motor pulse width Motor test period Oscillator Stability Start-up voltage Integrated input capacitor Integrated output capacitor Note: 1. Typical parameters represent the statistical mean values. e1217X 4 Symbol tot T amb T ...
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... Load capacitance recommended to connect the quartz case Capacitive coupling of TEST to OSCIN must be minimized by appropriate layout of the PCB to avoid disturbancing the oscillator. RESET 8 1 MOT1 7 2 e1217X R L MOT2 (by conductive epoxy). DD e1217X 5 ...
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... Figure 3. Motor Drive Outputs in Normal Mode and Motor Test TEST MOT1 MOT2 Figure 4. Motor Drive Outputs and RESET (open) RESET t M MOT1 MOT2 e1217X 6 T < t TIN < > t RIN RIN > t TIN ...
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... Ordering Information Table 2. Option List e1217X Motor Capacitance Cycle Pulse Test C OSCIN ( Option 3.9 125 -S 2 5.9 125 -T 10 3.9 125 -VA 2 4.9 62.5 -VB 2 4.9 125 -VC 40 5.9 125 -VF 2 3.9 62.5 -VH 2 3.9 62.5 -WB 2 4.9 125 Note: 1. On-chip stray capacitance included 4728A–CLOCK–06/03 ...
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Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 Chinachem ...