SDA525X

New features compared to SDA 525x-Specification, version 06/96 are printed in italic and bold. As described in the errata sheet 03/97, release 1.0, the newer versions of the SDA 525x and the SDA 525x-2 will not have a serial port (UART) any more.
• Acquisition:
Feature selection via special function register
Simultaneous reception of TTX, VPS, and WSS
Fixed framing code for VPS and TTX
Acquisition during VBI
Direct acces Conceal/reveal
Transparent foreground/background - inside/outside of a box
Contrast reduction inside/outside of a box
Cursor (color changes from foreground to background color)
Flash (flash rate 1s, not depending on field rate)
Programmable horizontal and vertical sync delay
Full screen background color in outer screen
Double size/double width/double height characters
• Synchronization:
Display synchronization to sandcastle or Horizontal Sync (HS) and Vertical Sync (VS)
• Microcontroller:
8 bit C500-CPU (8051 compatible)
CPU-clock 18 MHz, external 6-MHz-crystal
333 ns instruction cycle
Parallel 8-bit data and 16 . 19-bit address bus (ROMless-Version)
Eight 16-bit data pointer registers (DPTR)
Two 16-bit timers
Watchdog timer
Capture compare timer for infrared remote control decoding
256 bytes on-chip RAM
8 KByte on-chip display-RAM (access via MOVX) SDA 5250-2, SDA 5254-2 to SDA 5257-2 (optional 10 Kbyte)
1 Kbyte on-chip display-RAM (access via MOVX) for SDA 5251-2 to SDA 5253-2
1 Kbyte on-chip ACQ-buffer-RAM (access via MOVX)
1 Kbyte on-chip extended-RAM (access via MOVX) for SDA 5250-2 and SDA 5254-2 to SDA 5257-2
6 channel 8-bit pulse width modulation unit
2 channel 14-bit pulse width modulation unit
4 multiplexed ADC inputs with 8-bit resolution
One 8-bit I/O port with open drain output and optional I2C-Bus emulation
Two 8-bit multifunctional I/O ports
One 4-bit port working as digital or analog inputs
One 3-bit I/O port with optional RAM/ROM address expansion up to 512 Kbyte (ROMless-Version)
• P-SDIP-52-1/P-MQFP-64-1 package for ROM-Versions (SDA 5251-2 to SDA 5253-2, SDA 5254-2 to SDA 5257-2)
• P-MQFP-80-1 package for ROMless-Version (SDA 5250M-2)
• P-LCC-84-2 package for Emulator-Version (SDA 5250-2)
• 5 V supply voltages to VBI RAM buffer

Acquisition of packets x/26, x/27, 8/30 (firmware)
Assistance of all relevant checks (firmware)
1-bit framing code error tolerance (switchable)
• Display:
Features selectable via special function register
50/60 Hz display (optional 100 Hz)
Level 1.5 serial attribute display pages
Blanking and contrast reduction output
8 direct addressable display pages for SDA 5250-2, SDA 5254-2 to SDA 5257-2 (optional 10 pages)
1 direct addressable display page for SDA 5251-2 to SDA 5253-2
12 ´ 10 character matrix
96 character ROM (standard G0 character set)
156 national option characters for 12 languages (for European version)
288 characters for X/26 display
64 block mosaic graphic characters
32 characters for OSD in expanded character ROM + 32 characters inside OSD box