User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 794 of 909 2019 Ambiq Micro, Inc.
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21.18Counter/Timer (CTIMER)
21.19Flash Memory
21.20General Purpose Input/Output (GPIO)
All GPIOs have Schmitt trigger inputs.
Table 1161: Counter/Timer (CTIMER)
Symbol Parameter Min Typ Max Unit
F
CTIMER
Input frequency - - 24 MHz
T
CTIMER
Capture pulse width - -
Table 1162: Flash Memory
Symbol Parameter Min Typ Max Unit
PE
CYC
Program/erase cycles before failure 10,000 - - cycles
T
FDR
Data retention @85C 10 - - years
T
PAGE_ERASE
Single page erase time (8192 bytes) 10 (TBD) - 20 (TBD) ms
T
MASS_ERASE
Mass erase time 10 (TBD) - 20 (TBD) ms
Table 1163: General Purpose Input/Output (GPIO)
Symbol Parameter Min TYP Max Unit
ALL GPIOs
V
OH
High-level output voltage
0.8 * V
DDH
--V
V
OL
Low-level output voltage - -
0.2 * V
DDH
V
V
IH
Positive going input threshold voltage
0.7 * V
DDH
-V
V
IL
Negative going input threshold voltage -
0.3 * V
DDH
V
V
HYS
Input Hysteresis
0.1 * V
DDH
-V
C
GPI
Input capacitance - TBD pF
R
PU
Pull-up resistance - 63 - kΩ
R
PD
Pull-down resistance - 63 - kΩ
R
PUI2C00
I2C pad pull-up resistance, RSEL = 0x00 - 2 - kΩ
R
PUI2C01
I2C pad pull-up resistance, RSEL = 0x01 - 6 - kΩ
R
PUI2C10
I2C pad pull-up resistance, RSEL = 0x10 - 12 - kΩ
R
PUI2C11
I2C pad pull-up resistance, RSEL = 0x11 - 24 - kΩ
I
IN
Input pin leakage current - 1 - nA
I
INOD
Open drain output leakage current - 1 - nA
STANDARD GPIOs