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Table of Contents
Page 1:uforCE.SCH
Page 2:E4.SCH
Page 3:CLK.SCH
Page 4:MEMORY.SCH
Page 5:PCMCIA.SCH
Page 6:MISC.SCH
LCD.SCH
Page 7:
Page 8:AUDIC.SCH
Page 9:AUDPORT.SCH
A
B
C
D
E
A
B
C
D
E
Page 10:
VCC3.SCH
Page 11:VCC5.SCH
Page 12:P12V.SCH
Page 13:LCDVEE.SCH
Page 14:BATTCHRG.SCH
Page 15:VCCSWTCH.SCH
u forCE
Elan SC4 0 0 - Win dows CE
Dem on st rat ion Board Sch em at ic
Rev 2.0:
Sh. 2
Sh. 3
Sh. 5
Sh. 6
Removed BATTEMP signal from GPIO-CS3 pin
JP1 changed to 2mm spacing
JP2 added for PCMCIA booting
TC7SH32FU added to level shift SIRIN signal
U38D added to unused gates
Added GND to U14-9 and U14-10
Added circuit to slow turn-on of LCD
TC7SH32FU added to level shift PEN_OFF signal
R56 changed to 3.3K pull-up
R144 added to pull-up IOCHRDY signal
Filter circuit added to SPKR signal for noise supression
LDO regulator circuit changed to 2.85V nominal
Changed control of U21 PWM* mode
U21-9 connected to Vsource
U21 output capacitor increased; added bypass capacitor
Changed control of U23 PWM* mode
Sh. 7
Sh. 8
Sh. 10
Sh. 11
Rev 1.0:
Original design
Rev 1.1:
Sh. 3
Removed "no populate" designator from JP1.
Added TP to ROMCS0#.
Removed "no populate" designator from U6
Added RSTA A2 errata work-around.
Swapped nets TABXNEG & TABYPOS at J1.
Swapped nets LCDD0-LCDD3 at J2.
Changed P/N for J1 & J2.
Changed value of R43 (DISP_ON) & connected to LVEE
Added 2M resistor from U21 pin 19 to VSOURCE.
Added 2M resistor from U23 pin 19 to VSOURCE.
Corrected BATTEMP circuit.
Changed values of R118-R120 for FSTCHRG#.
Changed comparator bias voltage for VCC switch to Vbias
U23-9 connected to Vsource
Added bypass capacitor to U23
Changed D5 to no-populate
Sh. 4
Sh. 5
Sh. 7
Sh. 12
Sh. 13
Sh. 14
Changed enable for U24 to PCMVPP2A signal
Changed U24-8 to no-connect to cut output current
Slow-start circuit added to slow ramp-up of P12VOLT
Increased L8; decreased C146 on U25 output
Slow-start circuit added to slow ramp-up of LCDVEE
Changed U25-8 to no-connect to cut output current
U27 changed to MIC4576 for increased output currrent
Charger circuit changed to use MC33340 controller chip
for Fast/Trickle charge control and battery overtemperature
shutoff
Sh. 10
Sh. 11
Sh. 14
Sh. 15
Added LED to indicate charge mode
Charge currents changed to 1.25A/25mA nominal
Changed software controls for charger circuitry to
FASTCHG# and CHARGE# signals
Changed Vbatt/12VDC switch circuit to use SI4435DY
and power U37 from Vsource
Added current limit circuit to 12VDC
Modified Vbatt/12VDC switch circuit to work with MC33340
Adjusted BLx# sensors for 4.6V, 4.8V, 5.0V nominal
Removed BATTEMP circuit
R124 reduced to 1M for increased hysteresis
R128, R129, R137 increased to 5.1M for reduced hysteresis
LPD - Logic Produ ct s Division
Sh. 15
(C) Advanced Micro Devices, Inc.
(800) 222-9323
5204 E. Ben White Blvd.
Austin, TX 78741
AMD Proprietary/All Rights Reserved
Title
Size
Date:
uforCE Demo Board
Document Number
uforCE.SCH
Rev
2.0
AMD
Tuesday, October 14, 1997
1
15
Sheet
5
of
1
2
3
4