P87C591VFA/00,512 NXP Semiconductors, P87C591VFA/00,512 Datasheet - Page 57

• Manufacturer Part Number: P87C591VFA/00,512
• Description: IC 80C51 MCU 16K OTP 44-PLCC
• Manufacturer: NXP Semiconductors
• Series: 87Cr

Specifications of P87C591VFA/00,512

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: CAN, EBI/EMI, I²C, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: OTP
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.75 V ~ 5.25 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Processor Series: P87C5x
• Core: 80C51
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: CAN, I2C, UART
• Maximum Clock Frequency: 12 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
• On-chip Adc: 10 bit, 6 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-1256-5; 935268182512; P87C591VFAA

Philips Semiconductors
Preliminary Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
12.5.18.3 Data Length Code (DLC)
The number of bytes in the Data Field of a message is
coded by the Data Length Code. At the start of a Remote
Frame transmission the Data Length Code is not
considered due to the RTR bit being ‘1’ (remote). This
forces the number of transmitted/received data bytes to be
0. Nevertheless, the Data Length Code must be specified
correctly to avoid bus errors, if two CAN controllers start a
Remote Frame transmission with the same identifier
simultaneously.
The range of the Data Byte Count is 0 to 8 bytes and is
`
coded as follows:
DataByteCount
8 DLC.3 4 DLC.2 2 DLC.1 DLC.0
=
+
+
+
For reasons of compatibility no Data Length Code > 8
should be used. If a value greater than 8 is selected, 8
bytes are transmitted in the data frame with the Data
Length Code specified in DLC.
12.5.18.4 Identifier (ID)
In Standard Frame Format (SFF) the Identifier consists of
11 bits (ID.28 to ID.18) and in Extended Frame Format
(EFF) messages the identifier consists of 29 bits (ID.28 to
ID.0). ID.28 is the most significant bit, which is transmitted
first on the bus during the arbitration process. The
Identifier acts as the message’s name, used in a receiver
for acceptance filtering, and also determines the bus
access priority during the arbitration process. The lower
the binary value of the Identifier the higher the priority. This
is due to the larger number of leading dominant bits during
arbitration.
12.5.18.5 Data Field
The number of transferred data bytes is defined by the
Data Length Code. The first bit transmitted is the most
significant bit of data byte 1 at address 115 (SFF) or
address 117 (EFF).
2000 Jul 26
57