Datasheet

MCF5441x ColdFire Microprocessor Data Sheet, Rev. 8
Electrical characteristics
Freescale Semiconductor54
4.26 1-Wire timing specifications
Specifications for the 1-Wire interface are provided by Maxim Integrated Products, Inc. Please refer to data sheet information
for the appropriate device at www.maxim-ic.com.
4.27 General purpose I/O timing specifications
Figure 35. GPIO timing
4.28 Rapid general purpose I/O timing specifications
RGPIO signals use a mix of pad types: pad_fsr, pad_msr, and pad_ssr. The following timing specifications assume a pad slew
rate setting of 11 and a load of 50 pF.
Table 38. GPIO timing
1
1
These general purpose specifications apply to the following signals: IRQn, all UART signals, all timer
signals, FlexCAN signals, DACKn and DREQn, and all signals configured as GPIO.
Num Characteristic Min Max Unit
G1 FB_CLK high to GPIO output valid — 9 ns
G2 FB_CLK high to GPIO output invalid 1 — ns
G3 GPIO input valid to FB_CLK high 9 — ns
G4 FB_CLK high to GPIO input invalid 1.5 — ns
Table 39. RGPIO timing
Num Characteristic Min Max Unit
RG1 PST_CLK high to RGPIO output valid — 6 ns
RG2 PST_CLK high to RGPIO output Invalid 0.5 — ns
RG3 RGPIO input valid to PST_CLK high 6 — ns
RG4 PST_CLK high to RGPIO input invalid 1.5 — ns
G1
FB_CLK
GPIO Outputs
G2
G3 G4
GPIO Inputs