K20P144M120SF3 Datasheet, PDF (12/80 Pages) Freescale Semiconductor, Inc – K20 Sub-Family Data Sheet

General
5 General
5.1 AC electrical characteristics
Unless otherwise specified, propagation delays are measured from the 50% to the 50%
point, and rise and fall times are measured at the 20% and 80% points, as shown in the
following figure.
Figure 1. Input signal measurement reference
All digital I/O switching characteristics assume:
1. output pins
• have C_L=30pF loads,
• are configured for fast slew rate (PORTx_PCRn[SRE]=0), and
• are configured for high drive strength (PORTx_PCRn[DSE]=1)
2. input pins
• have their passive filter disabled (PORTx_PCRn[PFE]=0)
5.2 Nonswitching electrical specifications
5.2.1 Voltage and current operating requirements
Table 1. Voltage and current operating requirements
Symbol Description
V_DD
Supply voltage
V_DDA
Analog supply voltage
V_DD – V_DDA V_DD-to-V_DDA differential voltage
V_SS – V_SSA V_SS-to-V_SSA differential voltage
V_BAT
RTC battery supply voltage
Min.
Max.
Unit
1.71
3.6
V
1.71
3.6
V
–0.1
0.1
V
–0.1
0.1
V
1.71
3.6
V
Table continues on the next page...
Notes
K20 Sub-Family Data Sheet Data Sheet, Rev. 3, 2/2012.
12
Preliminary
Freescale Semiconductor, Inc.