Z9025106PSG Zilog, Z9025106PSG Datasheet - Page 47

• Manufacturer Part Number: Z9025106PSG
• Description: IC 32K 8BIT DTC OTP 42-DIP
• Manufacturer: Zilog

Specifications of Z9025106PSG

• Applications: TV Controller
• Core Processor: Z8
• Program Memory Type: OTP (32 kB)
• Controller Series: Digital Television Controller (DTC)
• Ram Size: 300 x 8
• Interface: I²C, 2-Wire Serial
• Number Of I /o: 27
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 42-DIP (0.600", 15.24mm)
• Processor Series: Z902x
• Core: Z8
• Data Bus Width: 8 bit
• Program Memory Size: 32 KB
• Data Ram Size: 300 B
• Interface Type: I2C
• Maximum Clock Frequency: 6 MHz
• Number Of Programmable I/os: 27
• Mounting Style: Through Hole
• On-chip Adc: 4 bit, 4 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Z90255 ROM and Z90251 OTP
32 KB Television Controller with OSD
39
5.7
Character Size and Smoothing Effect
The Z90255 supports four character sizes: 1X, 2X, double width, and double
height. The 2X size duplicates each pixel horizontally and vertically to reach
double size. Figure 14 shows a character at 1X, 2X without smoothing, and 2X
with smoothing.
Smoothing means enhancing a character to improve its appearance. This effect
can be applied to 2X and double width characters, and is enabled and disabled in
DISP_ATTR: 03h: Bank A (4).
Check the effect of smoothing on 2X and double width characters before finalizing
OSD programming.
1X
After Smoothing
2X
Figure 14 Smoothing Effect on 2X Character Size
PS001301-0800