ABX8XX-I2C-EVK / ABX8XX-SPI-EVK User's Guide - Abracon
ABX8XX-I2C-EVK / ABX8XX-SPI-EVK User's Guide - Abracon
ABX8XX-I2C-EVK / ABX8XX-SPI-EVK User's Guide - Abracon
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AB08XX/AB18XX Real Time Clock Family<br />
Evaluation Kit User’s <strong>Guide</strong><br />
<strong>ABX8XX</strong>-<strong>I2C</strong>-<strong>EVK</strong> / <strong>ABX8XX</strong>-<strong>SPI</strong>-<strong>EVK</strong><br />
AM18XX16 PIN 3x3MM QFN<br />
AB18XX PIN 3x3mm QFN<br />
XO<br />
Y1<br />
32.768 kHz<br />
DNP<br />
XI<br />
1 2<br />
GND<br />
Y2<br />
32.768 kHz<br />
C2<br />
1.0pF<br />
DNP<br />
nRST<br />
WDI<br />
nEXTR<br />
PSW<br />
1 2<br />
VCC_IO<br />
VCC_IO<br />
Y 3<br />
32.768 kHz<br />
DNP<br />
R8<br />
10.0k<br />
R11<br />
10.0k<br />
1 2<br />
U3<br />
AM18x5<br />
C1<br />
1.0pF<br />
DNP<br />
R3<br />
0 ohm<br />
DNP<br />
1<br />
2 nRST<br />
3 WDI<br />
4 nEXTR<br />
PSW/nIRQ2<br />
XI 16<br />
XO 15<br />
14<br />
VSS/VPP<br />
13<br />
VCC 13<br />
VBAT<br />
SDA/SDO<br />
SCL<br />
CLKOUT/nIRQ3<br />
GND<br />
VPP<br />
VCC_AM<br />
12<br />
nTIRQ/nCE<br />
FOUT/nIRQ 11<br />
10<br />
EXTI 9<br />
VSS/SDI<br />
R4<br />
0 ohm<br />
VCC_IO<br />
R5<br />
10.0k<br />
VPP_CON<br />
R12<br />
0 ohm<br />
R6<br />
10.0k<br />
nCE<br />
FOUT<br />
EXTI<br />
SDI<br />
VSYS<br />
AM18XX Test Points<br />
AB18XX Test Points<br />
R7<br />
0 ohm<br />
DNP<br />
nRST<br />
WDI<br />
nEXTR<br />
PSW<br />
XO<br />
XI<br />
U2<br />
AM18x5_20pin<br />
DNP<br />
VBAT_AM<br />
VPP<br />
XI<br />
20<br />
XO 19<br />
1<br />
2 nRST<br />
3 WDI<br />
4 VSY S1<br />
5 nRST1/nEXTR<br />
OUT2/PSW/nIRQ2<br />
VCC_AM<br />
VPP 18<br />
VCC 17<br />
nTIRQ/nCE 16<br />
15<br />
FOUT/nIRQ/OUT1 14<br />
EXTI 13<br />
VSS/SDI 12<br />
VSYS2 11<br />
CLKOUT/nIRQ3/OUT4<br />
VBAT<br />
VSS<br />
ISEL<br />
SDO/SDA<br />
SCL<br />
10<br />
6<br />
7<br />
8<br />
9<br />
nCE<br />
VSS_PAD 21<br />
VCC_AM<br />
GND<br />
FOUT<br />
EXTI<br />
SDI<br />
CLKOUT<br />
VCC_IO<br />
R33<br />
10.0k<br />
R34<br />
10.0k<br />
R35<br />
10.0k<br />
WDI<br />
nEXTR<br />
EXTI<br />
VBAT_AM<br />
5<br />
6<br />
7<br />
8<br />
VCC_IO<br />
R20<br />
2.2k<br />
R21<br />
2.2k<br />
VSS_PAD 17 CLKOUT<br />
GND<br />
R22<br />
10.0k<br />
DNP<br />
SCL<br />
SDA<br />
GND<br />
SCL<br />
SDA<br />
GND<br />
R17<br />
47k<br />
DNP<br />
R23<br />
47k<br />
DNP<br />
<strong>SPI</strong>/<strong>I2C</strong><br />
INTERFACE<br />
SELECT<br />
R19<br />
0 ohm<br />
DNP<br />
ISEL<br />
SUPERCAP DISCONNECT CIRCUIT<br />
This circuit allows the super capacitor to be disconnected from<br />
the VBAT pin using the SUCAP_DIS signal. A logic high voltage<br />
(at or above both the supercap and VBAT_AM_IMSR voltage<br />
levels) will disconnect the super cap from the VBAT_AM_IMSR<br />
net. A logic low voltage (0V) will connect the super cap to the<br />
VBAT_AM_IMSR net. Populate R10 and R16 to bypass.<br />
VBAT_AM_IMSR<br />
AB18XX AMX80X 88 PIN Pin SOIC<br />
VBAT_AM<br />
PSW<br />
R1<br />
0 ohm<br />
DNP<br />
R2<br />
0 ohm<br />
DNP<br />
XI<br />
XO<br />
GND<br />
U1<br />
AMx80x_SOIC<br />
DNP<br />
1<br />
2 XI<br />
3 X0<br />
4 PSW/nIRQ2/VBAT<br />
VSS<br />
VCC 8<br />
FOUT/nIRQ 7<br />
SCL 6<br />
SDA 5<br />
VCC_AM<br />
SUCAP_DIS<br />
R13<br />
51 ohm<br />
DNP<br />
D1<br />
ESD5V3S1U-02LRH<br />
DNP<br />
EXTERNAL CLOCK INPUT<br />
GND<br />
R18<br />
10.0k<br />
DNP<br />
+ C4<br />
30mF<br />
SUPERCAP<br />
GND<br />
2<br />
5<br />
LED<br />
6<br />
3<br />
R10<br />
0 ohm<br />
1<br />
4<br />
Q1<br />
Si1023X<br />
DNP<br />
R16<br />
0 ohm<br />
DNP<br />
INTERFACE SELECTION<br />
nCE<br />
SDI<br />
SCL<br />
SDA<br />
R9<br />
0 ohm<br />
DNP<br />
R14<br />
0 ohm<br />
DNP<br />
R15<br />
0 ohm<br />
R24<br />
0 ohm<br />
DNP<br />
R25<br />
0 ohm<br />
<strong>SPI</strong>_nCE<br />
<strong>SPI</strong>_MOSI<br />
<strong>SPI</strong>_SCK<br />
<strong>I2C</strong>_SCL<br />
<strong>SPI</strong>_MISO<br />
<strong>I2C</strong>_SDA<br />
Option to connect VCC_IO<br />
to VCC_AM_IMSR<br />
R30<br />
VCC_IO 0 ohm VCC_AM_IMSR<br />
DNP<br />
TEMPERATURE MEASUREMENT<br />
VCC_IO<br />
C11<br />
0.1uF<br />
DNP<br />
GND<br />
U4<br />
TMP20AIDRL<br />
DNP<br />
4<br />
3<br />
5 V+ VOUT 2<br />
6 NC2GND 1<br />
GNDNC1<br />
GND<br />
VTEMP<br />
XO<br />
R28<br />
0 ohm<br />
DNP<br />
1<br />
J29<br />
MMCX-J-P-X-RA-TH1<br />
DNP<br />
2<br />
R27<br />
510 ohm<br />
D2<br />
LED_GREEN<br />
1<br />
2<br />
3<br />
4<br />
5<br />
FOUT<br />
SCL<br />
SDA<br />
+ C6<br />
15mF<br />
SUPERCAP<br />
DNP<br />
GND<br />
GND<br />
Figure 8 – <strong>ABX8XX</strong>-<strong>I2C</strong>-<strong>EVK</strong> Schematic Page 1<br />
Page (15)
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