Features: · Single-chip higher frequency microcontroller with integrated On-Screen Display (OSD)
· Versions available with integrated Data Capture
· Both active HIGH and active LOW reset pins
· OTP memory for both Program ROM and character sets
· In-System Programming (ISP) option for the embedded OTP memories using IEEE1149 (JTAG: Joint Test Action Group) interface
· Single power supply: 3.0 to 3.6 V
· 5 V tolerant digital inputs and I/O
· 32 I/O ports via individual addressable controls
· Larger Character ROM, up to 1020 characters of 12 × 10 pixels
· Smoothing capability on sized characters
· Programmable I/O for push-pull, open-drain and quasi-bidirectional and high-impedance
· Two port lines with 8 mA sink (at <0.4 V) capability, for direct drive of LED
· Single crystal oscillator for microcontroller, OSD and Data Capture
· Power reduction modes: Idle, Standby and Power-down
· Byte level I2C-bus up to 400 kHz dual port I/O
· 64 Dynamically Redefinable Characters for OSDs
· Increased special graphic characters allowing four colours per character
· Selectable character height 9, 10, 13 and 16 TV lines
· Pin compatibility throughout family
· Operating temperature: -20 to +70 °C.
Pinout
Specifications
| SYMBOL |
PARAMETER |
CONDITIONS |
MIN. |
MAX. |
UNIT |
| VDDX |
supply voltage (all supplies) |
|
-0.5 |
+4.0 |
V |
| VI |
input voltage (any input) |
note 1 |
-0.5 |
(VDD + 0.5) or 4.1 |
V |
| VO |
output voltage (any output) |
|
-0.5 |
VDD + 0.5 |
V |
| IO |
output current (each output) |
|
- |
10 |
mA |
| IIOK |
DC input or output diode current |
|
- |
20 |
mA |
| Tj |
operating junction temperature |
|
-20 |
+125 |
°C |
| Tstg |
storage temperature |
|
-55 |
+125 |
°C |
Note
1. For 5 V tolerant I/Os, the maximum value may be 6 V only when VDD is present.DescriptionThe SAA56xx family of microcontrollers are a derivative of the Philips industry-standard 80C51 microcontroller and are intended for use as the central control mechanism in a television receiver. SAA56xx family provide control functions for the television system, OSD and incorporate an integrated Data Capture and display function for either Teletext or Closed Caption.
Additional features of SAA56xx family over the SAA55xx family have been included, e.g. 100/120 Hz (2H/2V only) display timing modes, two page operation (50/60 Hz mode for 16:9, 4:3), higher frequency microcontroller, increased character storage, more 80C51 peripherals and a larger Display memory. For CC operation, only a 50/60 Hz display option is available.
As with the rest of the SAA55xx family, the Data Capture hardware can decode and display both 525-line and 625-line World System Teletext (WST), Closed Caption information, Video Programming System (VPS) Information and Wide Screen Signalling (WSS) information. The same display hardware SAA56xx family is used for Teletext, Closed Caption and On-Screen Display, which means that the display features available give greater flexibility to differentiate the TV set.
The SAA56xx family family of devices offers a range of memory variants with Program ROM sizes of 128-kbyte and 192-kbyte, also up to 14 kbytes of RAM.
SAA56xx Data Sheet
