DS80C390-QNR+ Maxim Integrated Products, DS80C390-QNR+ Datasheet - Page 4

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

Specifications of DS80C390-QNR+

• 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: -40°C ~ 85°C
• Package / Case: 68-LCC, 68-PLCC
• Processor Series: 80C
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: CAN, IrDA
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Controller Family/series: (8051) 8052
• No. Of I/o's: 32
• Program Memory Size: 4KB
• Ram Memory Size: 4KB
• Cpu Speed: 40MHz
• No. Of Timers: 3
• Embedded Interface Type: CAN, UART
• Rohs Compliant: Yes
• Operating Supply Voltage: 3.85 V to 5.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AC SYMBOLS
The DS80C390 uses timing parameters and symbols similar to the original 8051 family. The following list of timing
symbols is provided as an aid to understanding the timing diagrams.
Figure 1. Multiplexed External Program Memory Read Cycle
SYMBOL
CE
W
C
D
H
Q
R
A
P
V
X
Z
L
t
I
Time
Address
Clock
Chip Enable
Input Data
Logic Level High
Logic Level Low
Instruction
PSEN
Output Data
RD Signal
Valid
WR Signal
No longer a valid logic level.
Tri-State
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