p87c51mc2 NXP Semiconductors, p87c51mc2 Datasheet - Page 33

• Manufacturer Part Number: p87c51mc2
• Description: 80c51 8-bit Microcontroller Family With Extended Memory
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FUNCTIONAL DEVIATIONS
Deviation #1
Deviation #2
Deviation #3
Deviation #4
Deviation #5
Deviation #6
Deviation #7
2001 Apr 06
Errata sheet
RxD1 pin is an open drain configuration.
Work-around:
A resistor must be used if this pin is to be used as an output. These pins will become port 4 on the next
release fixing this issue.
Port 4 does not exist for the RxD1 and TxD1 pins. DC parameters differ from standard port pins.
Work-around:
None. These pins will become port 4 on the next release.
RxD1, TxD1, and ALE pins will not go into once mode.
Work-around:
None. This will be fixed on the next release.
In the UART, the contents of RB8 and SBUF change when they shouldn’t if SM2=1 in modes 2 and 3.
Work-around:
None. Will be fixed on the next release.
The UART double buffering will be implemented on the next release.
Work-around:
None.
SPI block will be implemented on the next release.
Work-around:
None.
Security bits are not 100% compatible with past 80c51 products.
Work-around:
The security bits will be compatible on the next release.
1
P87C51MB2/P87C51MC2
Version 1.0
Errata