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EM78P311SXS/XJ Datasheet(PDF) 30 Page - ELAN Microelectronics Corp |
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EM78P311SXS/XJ Datasheet(HTML) 30 Page - ELAN Microelectronics Corp |
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30 / 68 page ![]() EM78P311N 8-Bit Microcontroller 26 • Product Specification (V1.0) 10.02.2006 (This specification is subject to change without further notice) 5.6 Time Base Timer and Keytone Generator Registers for AD Converter Circuit R_BANK Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 TEN TCK1 TCK0 0 TBTEN TBTCK2 TBTCK1 TBTCK0 Bank 1 0X0E TBKTC R/W R/W R/W -- R/W R/W R/W R/W 0 UERRIF RBFF TBEF TBIF EXIF1 0 TCIF0 Bank 0 0x0F ISFR2 0 R/W R/W R/W R/W R/W 0 R/W 0 UERRIE URIE UTIE TBIE EXIE1 0 TCIE0 SPR 0x0F IMR2 0 R/W R/W R/W R/W R/W 0 R/W MUX Fosc/2 Fosc/2 Fosc/2 Fosc/2 13 12 11 10 TBKTC TCK1:0 2 /TONE Pin TEN D Q Output Latch Data Output Output Enable (P63) Fig. 5-6 Tone Output Pin Configuration The Keytone output can generate 50% duty pulse for driving a piezo-electric buzzer. The P63 must be set to “1” before the keytone is enabled and it can be halted by setting P63 to “0”. P63 TEN TONE Pin Fig. 5-7 Tone Output Pin Timing Chart |
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