photoguyinmo's photostream  

This is the circuit board out of my old Palm Pilot PDA
MC68VZ328
The features of the DragonBall VZ include the following:
• Static FLX68000 CPU—identical to the MC68EC000 microprocessor
— Full compatibility with MC68000 and MC68EC000
— 32-bit internal address bus
— Static design that allows processor clock to be stopped to provide power savings
— 5.4 MIPS performance at 33 MHz processor clock
— External M68000 bus interface with selectable bus sizing for 8-bit and 16-bit data ports
• System integration module (SIM) that incorporates many functions typically related to external
array logic, reducing parts counts in design, with functions that include the following:
— System configuration and programmable address mapping
— Glueless interface to SRAM, DRAM, SDRAM, EPROM, and flash memory
— Eight programmable chip-selects with wait-state generation logic
— Four programmable interrupt I/Os, with keyboard interrupt capability
SPI 2
GPIO Ports
LCD
Controller
SPI 1
UART 2 with
IrDA1.0
UART 1 with
IrDA1.0
68000 Internal Bus
16-Bit
PWM 2
FLX68000
Static
CPU
GPIO Ports
8/16-Bit 68000
Real-Time
Clock
In-Circuit
Emulation
Bootstrap
Mode
Memory
Controller
Interrupt
Controller
CGM &
Power
16-Bit
Timers (2)
8-Bit
PWM 1
Bus Interface
Control
Features of the MC68VZ328
Introduction 1-3
— Five general-purpose, programmable edge/level/polarity interrupt IRQs
— Other programmable I/O, multiplexed with peripheral functions of up to 76 GPIO lines
— Programmable interrupt vector response for on-chip peripheral modules
— Low-power mode control
• DRAM controller
— Support for CAS-before-RAS refresh cycles and self-refresh mode DRAM
— Support for 8-bit and 16-bit port DRAM and synchronous DRAM
— EDO RAM or automatic Fast Page Mode for LCD access
— Programmable refresh rate
— Support for up to two banks of DRAM and EDO RAM
— Programmable column address size
• 76 GPIO lines grouped into 10 ports
• Two UART ports
• Two serial peripheral interface (SPI) ports
• Two 16-bit general-purpose counters/timers
— Automatic interrupt generation
— 30 ns resolution at 33 MHz system clock
— Timer input/output pin
• Real-time clock/sampling timer
— Separate power supply for the RTC
— One programmable alarm
— Capability of counting up to 512 days
— Sampling timer with selectable frequency (4 Hz, 8 Hz, 16 Hz, 32 Hz, 64 Hz, 256 Hz, 512 Hz,
1 kHz)
— Interrupt generation for digitizer sampling or keyboard debouncing
• LCD controller
— Software-programmable screen size (up to 640 × 512) to support single (nonsplit) monochrome
and color STN panels
— Capability of directly driving popular LCD drivers and modules from Motorola, Sharp, Hitachi,
Toshiba, and numerous other manufacturers
— Support for up to 16 gray levels out of a palette of 16 density levels
— Utilization of system memory as display memory
— LCD contrast control using 8-bit PWM
• Two pulse-width modulator (PWM) modules
— Audio effects support
— 16- and 8-bit resolution
— 5-byte FIFO that provides more flexibility on performance
— Sound and melody generation

Stephension's restaurant opened in 1946 and closed in 2007. Plans now include tearing down the building for a convience store. The sign will be saved but won't remain at the current location.