AM188ES-40VCSLASHW datasheet(6/102 Pages) AMD

6 / 102 page

Am186/188ES and Am186/188ESLV Microcontrollers

PRELIMINA R Y

RTS0/RTR0/PIO20 ........................................................................................................ 35

RXD0/PIO23 .................................................................................................................. 35

RXD1/PIO28 .................................................................................................................. 35

S2–S0 ............................................................................................................................ 35

S6/LOCK/CLKDIV2/PIO29 ............................................................................................. 36

SRDY/PIO6 .................................................................................................................... 36

TMRIN0/PIO11 .............................................................................................................. 36

TMRIN1/PIO0 ................................................................................................................ 36

TMROUT0/PIO10 .......................................................................................................... 36

TMROUT1/PIO1 ............................................................................................................ 36

TXD0/PIO22 ................................................................................................................... 36

TXD1/PIO27 ................................................................................................................... 36

UCS/ONCE1 .................................................................................................................. 36

UZI/PIO26 ...................................................................................................................... 37

VCC ................................................................................................................................ 37

WHB (Am186ES Microcontroller Only) .......................................................................... 37

WLB (Am186ES Microcontroller Only) ........................................................................... 37

WB (Am188ES Microcontroller Only) ............................................................................. 37

WR ................................................................................................................................. 37

X1 ................................................................................................................................... 37

X2 ................................................................................................................................... 37

Functional Description ................................................................................................................ 38

Bus Operation ............................................................................................................................ 39

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

Peripheral Control Block (PCB) ................................................................................................. 42

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

Chip-Select Unit ......................................................................................................................... 46

Refresh Control Unit .................................................................................................................. 47

Interrupt Control Unit ................................................................................................................. 48

Timer Control Unit ...................................................................................................................... 48

Direct Memory Access (DMA) ................................................................................................... 49

Pulse Width Demodulation ........................................................................................................ 51

Asynchronous Serial Ports ........................................................................................................ 51

Programmable I/O (PIO) Pins .................................................................................................... 52

Absolute Maximum Ratings ....................................................................................................... 53

Operating Ranges ...................................................................................................................... 53

DC Characteristics Over Commercial Operating Ranges .......................................................... 53

Commercial Switching Characteristics and Waveforms ............................................................ 61

TQFP Physical Dimensions ........................................................................................................ 98

PQFP Physical Dimensions ...................................................................................................... 100

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