MC68376BAMFT20 Freescale Semiconductor, MC68376BAMFT20 Datasheet - Page 167

• Manufacturer Part Number: MC68376BAMFT20
• Manufacturer: Freescale Semiconductor

Specifications of MC68376BAMFT20

• Cpu Family: 68K/M683xx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 20MHz
• Interface Type: QSPI/SCI
• Program Memory Type: ROM
• Program Memory Size: 8KB
• Total Internal Ram Size: 7.5KB
• # I/os (max): 18
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 4.75V
• On-chip Adc: 16-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 160
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

MC68336/376
USER’S MANUAL
Baud rate is selected by writing a value from 2 to 255 into SPBR[7:0] in SPCR0. The
QSPI uses a modulus counter to derive SCK baud rate from the MCU system clock.
The following expressions apply to SCK baud rate:
Giving SPBR[7:0] a value of zero or one disables the baud rate generator. SCK is dis-
abled and assumes its inactive state value.
The DSCK bit in each command RAM byte inserts either a standard or user-specified
delay from chip-select assertion until the leading edge of the serial clock. The DSCKL
field in SPCR1 determines the length of the user-defined delay before the assertion of
SCK. The following expression determines the actual delay before SCK:
where DSCKL[6:0] equals {1,2,3,..., 127}.
When DSCK equals zero, DSCKL[6:0] is not used. Instead, the PCS valid-to-SCK
transition is one-half the SCK period.
There are two transfer length options. The user can choose a default value of eight
bits, or a programmed value of eight to sixteen bits, inclusive. The programmed value
must be written into BITS[3:0] in SPCR0. The BITSE bit in each command RAM byte
determines whether the default value (BITSE = 0) or the BITS value (BITSE = 1) is
used. Table 9-3 shows BITS[3:0] encoding.
SPBR[7:0]
PCS to SCK Delay
Table 9-3 Bits Per Transfer
SCK Baud Rate
BITS[3:0]
QUEUED SERIAL MODULE
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
=
------------------------------------------------------------------------- -
2 SCK Baud Rate Desired
Bits per Transfer
or
=
System Clock
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
=
------------------------------------ -
2 SPBR[7:0]
System Clock
16
10
11
12
13
14
15
8
9
----------------------------------- -
System Clock
DSCKL[6:0]
MOTOROLA
9-17