mpc5553 Freescale Semiconductor, Inc, mpc5553 Datasheet - Page 40

• Manufacturer Part Number: mpc5553
• Description: Mpc5553 High Performance Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
40
1
2
3
4
5
6
All DSPI timing specifications use the fastest slew rate (SRC = 0b11) on pad type M or MH. DSPI signals using pad types of
S or SH have an additional delay based on the slew rate. DSPI timing is specified at V
V
The minimum SCK cycle time restricts the baud rate selection for the given system clock rate.
These numbers are calculated based on two MPC55xx devices communicating over a DSPI link.
The actual minimum SCK cycle time is limited by pad performance.
The maximum value is programmable in DSPI_CTARx[PSSCK] and DSPI_CTARx[CSSCK].
The maximum value is programmable in DSPI_CTARx[PASC] and DSPI_CTARx[ASC].
This number is calculated using the SMPL_PT bit field in DSPI_MCR set to 0b10.
DD33
and V
DDSYN
= 3.0–3.6 V, T
SCK output
(CPOL=1)
SCK output
(CPOL=0)
SOUT
SIN
PCSx
Figure 19. DSPI Classic SPI Timing—Master, CPHA = 0
A
= T
MPC5553 Microcontroller Data Sheet, Rev. 2.0
L
to T
First data
9
First data
2
H
, and CL = 50 pF with SRC = 0b11.
10
4
4
12
Data
Data
Last data
Last data
11
1
3
DD
= 1.35–1.65 V, V
Freescale Semiconductor
DDEH
= 3.0–5.5 V,