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PC87417 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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PC87417 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
4 / 257 page Features (Continued) www.national.com 4 Revision 1.2 s Watchdog — Watchdog counter reset by: ❏ Serial Ports Interrupts ❏ Keyboard and Mouse Interrupts ❏ Software control — 8-bit counter with 1 minute LSB — Generates a 250 ms pulse at WDO pin — Programmable SIOSMI or SIOSCI events Clocking, Supply and Package Information s Strap Input Controlled Operating Modes — Base Address (BADDR) for the PnP Index-Data register pair — Input clock presence (CKIN48) select — X-Bus configuration (XCNF2-0) select (PC87413 and PC87417) — ACCESS.bus slave address (ACBSA) select (PC87416 and PC87417) — TRI-STATE device pins (TRIS) s Clocks — LPC clock input (up to 33 MHz) — ServerI/O modules clock input: 48 MHz or no clock — Single 32.768 KHz crystal — On-chip low-frequency clock generator: ❏ 32.768 KHz for RTC, System Wake-Up Control (SWC), Power Active timers and the high-fre- quency clock generator ❏ Very low power consumption ❏ VBAT powered — On-chip high-frequency clock generator: ❏ Based on the 32.768 KHz clock ❏ VSB powered — Clock outputs: ❏ LFCKOUT: 32.768 KHz or 1 Hz ❏ HFCKOUT: 48 MHz or 40 MHz (or divided) s Protection — All pins are 5V tolerant and back-drive protected (except the LPC bus pins) — Separate battery pin that includes an internal UL protection resistor — GPIO multiplexing configuration lock s Power Supply — 3.3V supply operation — Separate pins for main (VDD) and standby (VSB) power supplies — Backup battery input for RTC, SWC and Power Active timers — Reduced standby power consumption — Very low power consumption for RTC and timers (0.9 µA typical) from backup battery s Package — 128-pin PQFP Device-Specific Information The following table shows the main features for each device in the PC8741x family. Function1,2 1. This Datasheet contains notes that are device specific. 2. The “not implemented” functions must not be accessed by the host/controller, because correct operation is not guaranteed. PC87413 PC87414 PC87416 PC87417 LPC Bus Interface YES YES YES YES X-Bus Extension NO NO YES YES ACCESS.bus Interface YES NO NO YES General-Purpose Input/Output Ports (GPIO) YES YES YES YES Real Time Clock (RTC) YES YES YES YES System Wake-Up Control (SWC) YES YES YES YES Legacy Functional Blocks YES YES YES YES |
Similar Part No. - PC87417 |
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Similar Description - PC87417 |
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