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 33M Hz 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 (4Hz, 8 Hz, 16Hz, 32 Hz, 64 Hz, 256Hz, 512 Hz,
1kHz)
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 perform an ce
Sound and melody generation