Document Number: 002-xxxxx Rev. **
Page 22 of 42
PRELIMINARY
CYBLE-013025-00
CYBLE-013030-00
Figure 13. 32 kHz Oscillator Block Diagram
GPIO Port
The CYBLE-0130XX-00 has 14 general-purpose I/Os (GPIOs) in the 32-pin package. All GPIOs support programmable pull-up and
pull-down resistors, and all support a 2 mA drive strength except P26, P27, and P28, which provide a 16 mA drive strength at 3.3V
supply. The following GPIOs are available:
n
P0-P4
n
P8/P33 only available for CYBLE-013030-00
n
P11/P27 (Dual bonded, only one of two is available.)
n
P12/P26 (Dual bonded, only one of two is available.)
n
P13/P28 (Dual bonded, only one of two is available.)
n
P14/P38 (Dual bonded, only one of two is available.)
n
P15
n
P24
n
P25
n
P32 - only available for CYBLE-013030-00
For a description of all GPIOs, see
.
Table 12. XTAL Oscillator Characteristics
Parameter
Symbol
Conditions
Minimum
Typical
Maximum
Unit
Output frequency
F
oscout
–
–
32.768
–
kHz
Frequency
tolerance
–
Crystal dependent
–
100
–
ppm
Start-up time
T
startup
–
–
–
500
ms
XTAL drive level
P
drv
For crystal selection
0.5
–
–
?W
XTAL series resis-
tance
R
series
For crystal selection
–
–
70
k?
XTAL shunt capaci-
tance
C
shunt
For crystal selection
–
–
1.3
pF
