5.12 Output Frequency – General-Purpose I/O
(P1.0 to P1.7, P2.7, P3.0 to P3.4, P4.0 to P4.7)
(P5.0 to P5.5, P5.7, P6.1 to P6.5, PJ.0 to PJ.3)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER |
TEST CONDITIONS |
MIN |
MAX |
UNIT |
fPx.y |
Port output frequency (with load) |
See (1)(2) |
VCC = 1.8 V, PMMCOREVx = 0 |
|
16 |
MHz |
VCC = 3 V, PMMCOREVx = 3 |
|
25 |
fPort_CLK |
Clock output frequency |
ACLK, SMCLK, or MCLK ,
CL = 20 pF(2) |
VCC = 1.8 V, PMMCOREVx = 0 |
|
16 |
MHz |
VCC = 3 V, PMMCOREVx = 3 |
|
25 |
(1) A resistive divider with 2 × R1 between VCC and VSS is used as load. The output is connected to the center tap of the divider. For full drive strength, R1 = 550 Ω. For reduced drive strength, R1 = 1.6 kΩ. CL = 20 pF is connected to the output to VSS.
(2) The output voltage reaches at least 10% and 90% VCC at the specified toggle frequency.