AM186 datasheet(6/112 Pages) AMD

6 / 112 page

6Am186TMER and Am188TMER Microcontrollers Data Sheet

DRAF

LCS/ONCE0 ................................................................................................................... 33

MCS3/RFSH/PIO25 ....................................................................................................... 33

MCS2–MCS0 (MCS2/PIO24, MCS1/PIO15, MCS0/PIO14) .......................................... 34

NMI ................................................................................................................................ 34

PCS3–PCS0 (PCS3/PIO19, PCS2/PIO18, PCS1/PIO17, PCS0/PIO16) ...................... 34

PCS5/A1/PIO3 ............................................................................................................... 34

PCS6/A2/PIO2 ............................................................................................................... 34

PIO31–PIO0 (Shared) .................................................................................................... 35

RD .................................................................................................................................. 35

RES ................................................................................................................................ 35

RFSH2/ADEN (Am188™ER Microcontroller Only) ........................................................ 35

RXD/PIO28 .................................................................................................................... 35

S2 ................................................................................................................................... 35

S1/IMDIS ........................................................................................................................ 37

S0/SREN ........................................................................................................................ 37

S6/CLKSEL1/PIO29 ....................................................................................................... 37

SCLK/PIO20 .................................................................................................................. 37

SDATA/PIO21 ................................................................................................................ 37

SDEN1/PIO23, SDEN0/PIO22 ....................................................................................... 37

SRDY/PIO6 .................................................................................................................... 38

TMRIN0/PIO11 .............................................................................................................. 38

TMRIN1/PIO0 ................................................................................................................ 38

TMROUT0/PIO10 .......................................................................................................... 38

TMROUT1/PIO1 ............................................................................................................ 38

TXD/PIO27 ..................................................................................................................... 38

UCS/ONCE1 .................................................................................................................. 38

UZI/CLKSEL2/PIO26 ..................................................................................................... 38

VCC ................................................................................................................................ 39

WHB (Am186™ER Microcontroller Only) ...................................................................... 39

WLB (Am186™ER Microcontroller Only) ........................................................................ 39

WB (Am188™ER Microcontroller Only) ......................................................................... 39

WR ................................................................................................................................. 39

X1 ................................................................................................................................... 39

X2 ................................................................................................................................... 39

Functional Description ............................................................................................................... 40

Memory Organization ..................................................................................................... 40

I/O Space ....................................................................................................................... 40

Bus Operation ............................................................................................................................ 41

Bus Interface Unit ...................................................................................................................... 41

Nonmultiplexed Address Bus ......................................................................................... 41

Byte Write Enables ........................................................................................................ 41

Output Enable ................................................................................................................ 41

Pseudo Static RAM (PSRAM) Support .......................................................................... 44

Peripheral Control Block (PCB) .................................................................................................44

Reading and Writing the PCB ........................................................................................ 44

Clock and Power Management .................................................................................................. 44

Phase-Locked Loop (PLL) ............................................................................................. 44

Crystal-Driven Clock Source .......................................................................................... 45

External Source Clock ................................................................................................... 45

System Clocks ............................................................................................................... 48

Power-Save Operation ................................................................................................... 48

Initialization and Processor Reset .................................................................................. 48

Reset Configuration Register ......................................................................................... 48

AM186 数据表(PDF) 6 Page - Advanced Micro Devices

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