MC68376BAMFT20 Freescale Semiconductor, MC68376BAMFT20 Datasheet - Page 121

• 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
DATA15
DATA8
DATA7
DATA0
Alternate methods can be used for driving data bus pins low during reset. Figure 5-17
shows two of these options. The simplest is to connect a resistor in series with a diode
from the data bus pin to the RESET line. A bipolar transistor can be used for the same
purpose, but an additional current limiting resistor must be connected between the
base of the transistor and the RESET pin. If a MOSFET is substituted for the bipolar
transistor, only the 1 k
offer the protection from potential memory corruption during RESET assertion as does
the circuit shown in Figure 5-16.
RESET
R/W
DS
Figure 5-16 Preferred Circuit for Data Bus Mode Select Conditioning
820
V
DD
10 k
V
DD
10 k
isolation resistor is required. These simpler circuits do not
V
SYSTEM INTEGRATION MODULE
DD
OUT1
IN1
HIGH OR LOW
AS NEEDED
TIE INPUTS
74HC244
OUT8
IN8
OE
OUT1
IN1
HIGH OR LOW
AS NEEDED
TIE INPUTS
74HC244
DATA BUS SELECT CONDITIONING
OUT8
MOTOROLA
IN8
OE
5-43