Transcript T1P3 - Wellner U_I_1

318-595 Capstone Project
U.I.1 Specifications
• Description:
– Belongs to the Bus Transceiver Unit
– Sends appropriate output signal to CPU1
• Performance Requirements:
– Power Inputs:
• 5 VDC input (nominal)
– Electrical Interfaces:
• 8 bit Digital I/O with CPU1
– Operator Outputs:
• 16 x 2 LCD Display
• LED
1
318-595 Capstone Project
U.I.1 Specifications
• Standard Requirements:
– Environment:
•
•
•
•
Operating Temperature Range: -40 to 70 °C
Operating Humidity Range: 2 to 98 %
Storage Temperature Range: -30 to 80 °C
Storage Humidity Range: 2 to 98 %
– Life Cycle:
• Production Life 5 Years
• Full Warranty Period: 1 Year
• Service Strategy: Distributor Repair
– Mechanical:
• Block PCB area: 121 cm2
2
318-595 Capstone Project
U.I. 1 Block Specifications
Internal Block Diagram
UI I/O 8 data lines
3
LCD
Display
318-595 Capstone Project
Contour and Block Diagram of LCD
Display
4
318-595 Capstone Project
U.I.1 Block: Signal Table
Power
Power Signals
Type
Power1 VCC +5
Direction
DC Power
Input
Voltage
Nominal
5.0V
Voltage Range
Min
Max
4.75V
5.25V
Freq
Nominal
DC
Freq Range
Min
Max
0
N/A
% V-Reg
Max
5.00%
V-Ripple
Max
0.1V
Current
Max
500mA
Digital
Digital Signals
LCD Output
5
Type
Dir
Output
Structure
Digital Output Totem Pole
Input
Tech
Structure
TTL
Freq
Nominal
2.0Mhz
Logic
Input Characteristics
Voltage Vih Min Iih Max ViL Max IiL Max Vth Min
5V
5.0V
1.5mA
1.5V
N/A
N/A
Vth Max
N/A
Output Characteristics
Voh Min Ioh Max VoL Max
2.4V
N/A
0.4V
318-595 Capstone Project
U.I.1 Block Specifications
• Prototyping Plan:
– Purchase components (LCD Display)
– construct circuit layout
– build prototype
• Costs:
– $12.00 * 1 LCD Display
6
318-595 Capstone Project
U.I.1 Block Prototyping Plan
7
Block
Name
Block Area
(cm2)
U.I.1
121
Total PCB
Area (cm2)
None
PCB
Substrate Type
None
Comp
Attachment Type
Soldering
Socketed
Components
Types of
Connectors
None
0.25 headers
318-595 Capstone Project
Power Block DFM Plan
Sub Circuit
Type
Power supply
to U.I.#1
Fn(s)
8
Applicable Worst Case Analysis Plan
(See DFM Analysis Guide)
Task 1
Task 2
Task 3
Task 4
Task 5
Task 6
Task 7
Components
R,C
Safety current
500mA
+- 15%
Safety voltage
5V
+-15%
Voltage
Regulation
0.25V
+-5%
Current
Regulation
25mA
+-5%
Voltage Ripple
0. 1V
+-2%
Safety power
1.25mW
+-15%
318-595 Capstone Project
U.I.1-Digital Block DFM
Dig
Device
LCD
Display
•
•
•
9
Output
Type
Std
Input
Type
Std
Tech
Type
TTL
DC Drive Device Parameters
Vil
max
Vih
min
Iil (-)
Max
Iih
max
Vol
max
Voh
min
Iol
max
Ioh (-)
Min
Vhyst
1.5V
5.0V
N/A
1.5mA
0.4V
2.4V
N/A
N/A
N/A
Vxx in Volts, Ixx in mA
Source Currents Listed as Negative
Std = Standard, OC = Open Collector/Drain, TS = Tristate, ST – Schmitt Trigger
Checked
318-595 Capstone Project
U.I.1 Digital Block DFM - Timing Analysis Table
Dig Signal
LCD
Display
Output
Type
Std
Input
Type
Std
Other
Timing Parameters
Tsu
Setup
Th
Thold
Tsu
Marg
Th
Marg
Fmax
F
Marg
Tpulse
Min
Tpulse
Marg
25nS
25nS
+-5nS
+-5nS
10MHz
+-10%
N/A
N/A
Checked
• Std = Standard, OC = Open Collector/Drain, TS = Tristate,
ST – Schmitt Trigger
10