Motorola MC68VZ328 - Manual (Page 33)

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