MC68HC68T1 Datasheet, PDF (23/26 Pages) Motorola, Inc – Real-Time Clock plus RAM with Serial Interface

3.0 V
VCC
NON–RECHARGEABLE
BATTERY
–+
1 kW
RLIMIT _DBLOCK
0.1 mF
100 kW
0.1 mF
13
16 12
VBATT VDD VSYS
11
6 ^LINE
MISO
5
3 ^MOSI
7 ^INT
SS
4
SCK
POR ¹⁰
15
XTALout
XTALin ¹⁴
215 kW*
10 MW
MC68HC68T1
1
CLKOUT
2
CPUR
9
PSE
VSS
8
32.768
kHz
10 pF*
0.1 mF
39 pF*
* Actual values may vary, depending on recommendations of crystal manufacturer.
Figure 22. Non–Rechargeable Battery–Backup System
MOTOROLA
MC68HC68T1
23