3 rtc, Figure 4-45: rtc reference schematic, Clear cmos/super cap – IEI Integration ICE-DB-9S User Manual

Page 98

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Page 85

ICE Module

4.14.2.3 RTC

Q10,C234 and R304 are for the no battery solution. Using super CAP to instead of

Battery.

BT2

DCBAT_3V

+V3.3_DUAL

C235

0.22F Super Cap

2

1

CON3_HDR

JP9

3

2

1

+VBAT

C239

0.1U_4_Y_16V

C237

10U_8_X_6V3

R305

1K_4

R307
1K_4

JP9(1-2)

JUMP_1X2_2.54mm

Q11

BAT54C

SOT23_AAC

C

A1

A2

CLEAR CMOS/Super CAP

R304

1K_4

Q10

BAT54C

SOT23_AAC

C

A1

A2

BAT1

CR2032-HOLDER

Figure 4-45: RTC Reference Schematic

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