SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 36

• Manufacturer Part Number: SPC8104
• Description: VGA LCD CONTROLLER
• Manufacturer: S-MOS Systems

2.0
2.1
2.2
2.3
Hardware Functional Specification
SP1-10
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low power CMOS
2.5/3.3 volt core and 3.3 volt I/O operation
128 pin QFP15 surface mount package
16 bit ISA CPU data bus interface bus.
external crystal oscillator supported only, maximum 28 MHz frequency.
interfaces to a single 256 Kx16 DRAM 80ns DRAM (1024x256x16 or 512x512x16).
access to full 512 Kbytes of video memory allowed.
selectable DRAM interface configurations: 2 CAS/1 WE, or 1 CAS/2 WE.
selectable 256 cycle/4 msec or 256 cycle/32 msec DRAM refresh rate, or low power self-refresh mode (for
DRAMs supporting self-refresh).
32 kHz 50% duty cycle power down clock support during Suspend mode.
three hardware or software initiated power-save modes.
low power consumption.
support for all standard VGA modes except mode 13h (does not support packed pixel modes).
3C3h video enable register supported.
proprietary internal 64x4 gray scale lookup table provided.
programmable hardware mapping of VGA palette-style writes to 16 level LCD gray scale values.
vertical interrupt function on IRQ pin supported.
VGA RAMDAC NOT supported.
Shift 2/4, Count-by-2/4, HRTC/2 NOT supported.
9-dot Character clock NOT supported (no 9-dot character modes).
FEATURES
Technology
System
Compatibility
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
X15-SP-001-08.1
412-1.0
SPC8104