ST2205U datasheet(11/32 Pages) SITRONIX

номер детали	ST2205U

подробное описание детали	8 BIT Integrated Microcontroller with 32K Bytes RAM

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производитель	SITRONIX [Sitronix Technology Co., Ltd.]

домашняя страница	http://www.sitronix.com.tw

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11 / 32 page

ST2205U

Version 1.0

10/32

6/13/2007

8

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The ST2205U builds in one chip-select signal ( CS0 ) for

embedded 16K bytes mask ROM and six chip-select signals

multiplexed with PD5~0 of Port-D which are used to select

devices on the external bus. There are two options for the first

16K bytes memory which are controlled by MMD pin. Tie MMD

to ground to select normal mode and enable internal ROM for

the first 16K bytes memory. Connect MMD to chip-select of an

external device to select emulation mode and disable internal

ROM. After reset cycles, MMD changes to an output and

outputs chip-select signal CS0 . Refer to FIGURE 8-1 for two

connections of different modes.

Two bits CSM[1:0] of port miscellaneous register (PMCR)

select four modes of CSL which define the memory size of

each external chip-select. Chip-select signal CS6 can change

to be address signal A23 to make one single device of 16M

bytes at CS5 possible. The address range of CSx of higher

number follows the range of previous one of lower number.

Note: Write “1” to bit of port direction control

register PCD, then to bit of port

function-select register PFD to activate the

designated chip-select signal.

A. Normal Mode

B. Emulation Mode

FIGURE 8-1 Connections Of MMD/ CS0

Аналогичный номер детали - ST2205U

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Vishay Siliconix	ST220-100T4MI	116Kb / 6P	SuperTan® Wet Tantalum Capacitors With Hermetic Seal 12-May-2022
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Аналогичное описание - ST2205U

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ATMEL Corporation	AT89C51RC	246Kb / 37P	8-bit Microcontroller with 32K Bytes Flash
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ST2205U датащи(PDF) 11 Page - Sitronix Technology Co., Ltd.

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Аналогичный номер детали - ST2205U

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