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AM186 数据表(PDF) 3 Page - Advanced Micro Devices |
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AM186 数据表(HTML) 3 Page - Advanced Micro Devices |
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3 / 112 page  Am186TMER and Am188TMER Microcontrollers Data Sheet 3 DRAF T Am188™ER MICROCONTROLLER BLOCK DIAGRAM Notes: * All PIO signals are shared with other physical pins. See the pin descriptions beginning on page 30 and Table 3 on page 36 for information on shared functions. 20-Bit Source Pointers Interrupt Control Unit Timer Control Unit DMA Unit Bus Interface Unit 32 Kbyte SRAM (32K x 8) Chip-Select Unit Clock and Power Management Control Registers 16-Bit Count Registers Max Count A Registers 16-Bit Count Registers 20-Bit Destination Pointers Control Registers Control Registers Control Registers 01 (WDT) 2 0 1 Max Count B Registers Refresh Control Unit Control Registers Control Registers Control Registers CLKOUTB CLKOUTA INT4 INT3/INTA1/IRQ INT2/INTA0 INT1/SELECT INT0 TMROUT0 TMROUT1 DRQ0 DRQ1 VCC GND TMRIN0 TMRIN1 Asynchronous Serial Port Synchronous Serial Interface TXD RXD SCLK SDATA SDEN0 SDEN1 NMI A19–A0 AD7–AD0 ALE WR WB RD RES LCS/ONCE0 MCS2–MCS0 PCS6/A2 PCS3–PCS0 PCS5/A1 UCS/ONCE1 X2 X1 Control Registers PSRAM Control Unit MCS3/RFSH PIO Unit PIO31– PIO0* AO15–AO8 RFSH2/ADEN Execution Unit ARDY SRDY DT/R DEN HOLD HLDA S6/ UZI/ CLKSEL2 CLKSEL1 S1/IMDIS S0/SREN S2 Watchdog Timer (WDT) |
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