
Appendix C – Bill of Material
Table 7-1. Bill of Material (Continued)
Item
42
43
44
45
46
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
Qty
4
1
2
4
1
1
1
1
1
1
1
1
2
1
1
2
1
1
4
1
2
Reference
SW1, SW2, SW3,
SW4
SW5
S1, S2
TP1, TP2, TP3, TP4
U1
U4, U5
U6
U8
U9
U10
U12
U13
U14, U15
U16
U30
U17, U18
U19
U20
U21
U23
U27, U29
Part
TP 33
TP 33
Push Button
Test Point Corner
AT49BV162A-70TI
IDT71V124SA15PH
74LVC04AD
74LV244D
74LV125D
MAX3223ECAP
AT91M55800A
LM61BIM3
REF192GS
74LVC74AD
74LCX74
MAX6315US27D1-T
LT 1507CS8-3.3
LTC 1503CS8-2
AT45DB321-TC
AT24C512W1-10SC-
2.7
74LV138D
Designation
Push button with black
cabochon
Push button with red cabochon
CMS Push button
CMS Test point
Flash 2M bytes x 16-bits
Static memory: 128k x 8-15 ns
(double implantation)
Reverser (LVC serial)
Buffer
Tri-state buffer
Driver RS232 + ESD "E"
Microcontroller
Temperature sensor
Reference of voltage 2V5 ±0.5%
D flip flop (LVC serial)
D Flip Flop (LCX serial)
Circuit LVD-reset. (Threshold
2.7V; Timeout = 1 ms)
Voltage Regulator DC/DC
Voltage Regulator DC/DC
Serial DataFlash (wired
according to availability)
EEPROM 64K bytes
Decoder (3 to 8)
63
1
U28
AT25256W-10SC-2.7 EEPROM 32K bytes
64
65
66
1
1
4
Y2
Y4
PS1, PS2, PS3, PS4
Crystal 32768 kHz
Crystal 16 MHz
Board Support
Crystal 32768 kHz, ±20 ppm at
25 ° C
Crystal 16 MHz, ±30ppm at
25 ° c
Plastic bases H > 10mm
Note:
AT91EB55 Evaluation Board User Guide
1. The EB55 is equipped with SRAM U2/U3 or U4/U5 (the difference lies in case type
only). The choice is made according to availability.
7-3
1709C–ATARM–28-Apr-05