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W925EP01 Datasheet(PDF) 3 Page - Winbond |
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W925EP01 Datasheet(HTML) 3 Page - Winbond |
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3 / 108 page  W925EP01/ W925EP01FG Publication Release Date: Apr. 10, 2006 - 3 - Revision A2 • I/O: 64 I/O pins. - P0: Bit and byte addressable. I/O mode can be bit controlled. Open drain type. - P1~P3: Bit and byte addressable. Pull high and I/O mode can be bit controlled. - P4: Byte addressable. Pull high and I/O mode can be bit controlled. - P5~P6: Byte addressable. Pull high and I/O mode can be bit controlled, P5~P6 also provide the address bus A0~A15 for access external program memory or data memory. - P7: Byte addressable. Pull high and I/O mode can be bit controlled, P7 also provide the data bus D0~D7 for access external program memory or data memory • Power mode: - Normal mode: Normal operation. - Dual-clock slow operation mode: System is operated from the sub-oscillator. (Fosc=Fs and Fm is stopped) - Idle mode: CPU hold. The clock to the CPU is halted, but the interrupt, timer and watchdog timer block work normally but CID function is disabled. - Power down mode: All activity is completely stopped and power consumption is less than 1uA. • Timer: Dual 13/16-bit timers or 8-bit auto-reload timers, that are Timer0 and Timer1. • Watchdog timer: WDT can be programmed by the user to serve as a system monitor. • Interrupt: 12 interrupt sources with two levels of priority. - 4 interrupts from INT0, INT1, INT2 and INT3. - 2 interrupts from Timer0 and Timer1. - 2 interrupt from Serial port0 and Serial port1. - 1 interrupt from CID. - 1 interrupt from 13/14-bit Divider. - 1 interrupt from Comparator. - 1 interrupt from Watch Dog Timer. • Divider: 13/14bit divider, clock source from sub-oscillator. Therefore, DIVF set every 0.25/0.5 second. • Comparator: - Comparator: 1 analog input from VNEG pin. 1 reference input from VPOS pin. • Serial ports: - Serial port0: One full duplex serial port. (UART) - Serial port1: An 8-bit serial transceiver with SCLK1 and SDATA1. (Serial interface port) • Package: - 100pin QFP: W925EP01 - 100pin lead-free QFP: W925EP01FG |
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