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==== Table of Contents ====

[[#v_z180_rev0_mezzanine_board_for_epm240_dev_board|3V Z180 Rev0 Mezzanine Board for EPM240 Dev Board]]

[[#introduction|Introduction]]

[[#features|Features]]

[[#theory_of_operation|Theory of Operation]]

[[#design_files|Design Files]]

[[#software|Software]]

[[#vz180_projects|3VZ180 Projects]]

[[#overclock_3vz180|Overclock 3VZ180]]

====== 3V Z180 Rev0 Mezzanine Board for EPM240 Dev Board ======

===== Introduction =====

Z8S180 is rated for 3.3V operation at 20MHz nominal. The 3VZ180 mezzanine board is designed for RomWBW. While its nominal operating frequency is 16.7MHz, It has been overclocked to 64MHz. A 50MHz design file is included along with the nominal 16.7MHz design files.

===== Features =====

Z8S180

512K RAM

512 byte flash embedded in EPM240

ACIA emulation in EPM240

SD card interface

RTC module based on DS1302

I2C interface

Designed for RomWBW

===== Theory of Operation =====

===== Design Files =====

Schematic

Gerber photoplots

CPLD design files

Bill of Materials

==== Software ====

===== 3VZ180 Projects =====

==== Overclock 3VZ180 ====

Discussion in retrobrewcomputers about [[forum:index.php|overclocking 3VZ180]]

3VZ180 RomWBW is successful

[[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=c71292&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fepm240dev%2F3vz80%2F3vz180_romwbw.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=441&tok=73a7d0&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fepm240dev%2F3vz80%2F3vz180_romwbw.jpg?300x441|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_epm240dev_3vz80_3vz180_romwbw.jpg}}]]

adding RTC, running 3VZ180 at 50MHz

[[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=a9b8fd&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fepm240dev%2F3vz80%2F50mhz3vz180_rtc.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=420&tok=136ec3&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fepm240dev%2F3vz80%2F50mhz3vz180_rtc.jpg?300x420|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_epm240dev_3vz80_50mhz3vz180_rtc.jpg}}]]

64MHz clock

[[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=a4f150&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fepm240dev%2F3vz80%2F64mhz3vz180_rtc.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=409&tok=786ab5&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fepm240dev%2F3vz80%2F64mhz3vz180_rtc.jpg?300x409|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_epm240dev_3vz80_64mhz3vz180_rtc.jpg}}]]