DS80C390-QCR Maxim Integrated Products, DS80C390-QCR Datasheet - Page 13

• Manufacturer Part Number: DS80C390-QCR
• Description: IC MPU CAN DUAL HS 68-PLCC
• Manufacturer: Maxim Integrated Products
• Series: 80Cr

Specifications of DS80C390-QCR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SIO, UART/USART
• Peripherals: Power-Fail Reset, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3.85 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 68-LCC, 68-PLCC
• Processor Series: DS80C390
• Core: 8051
• Data Bus Width: 8 bit
• Program Memory Size: 4 KB
• Data Ram Size: 4 KB
• Interface Type: CAN, IrDA
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 3.85 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Note 13:
ELECTRICAL CHARACTERISTICS—(NONMULTIPLEXED ADDRESS/DATA BUS)
(Note 13)
Figure 13. Nonmultiplexed External Program Memory Read Cycle
Oscillator Frequency
PSEN Pulse Width
PSEN Low to Valid Instruction In
Input Instruction Hold After PSEN
Input Instruction Float After PSEN
Port 1 Address, Port 4 CE to Valid
Instruction In
Port 2, 4 Address to Valid Instruction
In
All parameters apply to both commercial and industrial temperature operation unless otherwise noted. The value t
the machine cycle clock in terms of the processor’s input clock frequency. These relationships are described in the Stretch Value
Timing table. All signals characterized with load capacitance of 80pF except Port 0, ALE, PSEN, RD, and WR with 100pF. Interfacing
to memory devices with float times (turn off times) over 25ns can cause bus contention. This does not damage the parts, but causes
an increase in operating current. Specifications assume a 50% duty cycle for the oscillator. Port 2 and ALE timing changes in relation
to duty cycle variation. Some AC timing characteristic drawings contain references to the CLK signal. This waveform is provided to
assist in determining the relative occurrence of events and cannot be used to determine the timing of signals relative to the external
clock.
PARAMETER
SYMBOL
1 / t
t
t
t
t
t
t
AVIV1
AVIV2
PLPH
PXIX
PXIZ
PLIV
CLCL
External oscillator
External crystal
CONDITIONS
13 of 53
MIN
0
1
0
40MHz
MAX
40
40
0.5 t
MIN
VARIABLE CLOCK
MCS
0
1
0
- 8
Characteristics
0.875 t
0.75 t
0.5 t
See MOVX
MAX
MCS
40
40
MCS
MCS
MCS
- 20
- 22
- 30
is a function of
UNITS
MHz
ns
ns
ns
ns
ns
ns