Z90251 ZILOG [Zilog, Inc.], Z90251 Datasheet - Page 5

• Manufacturer Part Number: Z90251
• Description: eZVision 200 Television Controllers with OSD
• Manufacturer: ZILOG [Zilog, Inc.]

List of Figures
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Z90255-Based TV System Application ........................................................ 2
Z90255 Block Diagram ................................................................................ 3
Z90255 and Z90251 Pin Assignments......................................................... 5
Code Development Environment ............................................................... 10
Register File Map....................................................................................... 12
Program Memory Map ............................................................................... 14
Stop Mode Recovery Source/Level Select ................................................ 21
Positive and Negative Sync Signals .......................................................... 23
Second Color Display ................................................................................ 28
Mesh On .................................................................................................... 29
Video Fade (Example) ............................................................................... 34
Character Pixel map in CGROM................................................................ 37
Example of a Multiple Character Icon ........................................................ 38
Smoothing Effect on 2X Character Size .................................................... 39
VRAM Data Path for 512 Character Set .................................................... 42
H
Bidirectional Port Pin Pad Multiplexed with I2C Port ................................. 53
Pulse Width Modulator Timing Diagram, 6 Bit ........................................... 71
Pulse Width Modulator Timing Diagram, 14-Bit ......................................... 72
Analog Signals Generated from PWM Signals .......................................... 79
ADC Block Diagram ................................................................................... 82
Timing Requirements of External Inputs.................................................... 86
42-Lead Shrink Dual-in-line Package (SDIP) ............................................ 87
SYNC
and V
SYNC
Specification ............................................................... 52
32 KB Television Controller with OSD
PS001301-0800
v