P87LPC761BN NXP Semiconductors, P87LPC761BN Datasheet - Page 24

• Manufacturer Part Number: P87LPC761BN
• Description: IC, MCU 8BIT 80C51 2K OTP, DIP16
• Manufacturer: NXP Semiconductors

Specifications of P87LPC761BN

• Controller Family/series: (8051) 8052
• Core Size: 8bit
• No. Of I/o's: 14
• Program Memory Size: 2KB
• Ram Memory Size: 128Byte
• Cpu Speed: 20MHz
• Oscillator Type: External, Internal
• No. Of Timers: 2
• Digital: RoHS Compliant
• Package: 16PDIP
• Device Core: 80C51
• Family Name: 87LP
• Maximum Speed: 20 MHz
• Ram Size: 128 Byte
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 14
• Interface Type: I2C/UART
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 2

Philips Semiconductors
2002 Mar 07
Low power, low price, low pin count (16 pin)
microcontroller with 2 kbyte OTP
KBI
BIT
KBI.7
KBI.6
KBI.5
KBI.4
KBI.3
KBI.2
KBI.1
KBI.0
Note: the Keyboard Interrupt must be enabled in order for the settings of the KBI register to be effective. The interrupt flag
(KBF) is located at bit 7 of AUXR1.
Address: 86h
Not Bit Addressable
SYMBOL
KBI.6
KBI.5
KBI.4
KBI.3
KBI.1
KBI.0
P0.6
P0.5
P0.4
P0.3
P0.1
P0.0
KBI.6
KBI.5
KBI.4
KBI.3
KBI.1
KBI.0
—
—
–
7
FUNCTION
Reserved. Must be 0.
When set, enables P0.6 as a cause of a Keyboard Interrupt.
When set, enables P0.5 as a cause of a Keyboard Interrupt.
When set, enables P0.4 as a cause of a Keyboard Interrupt.
When set, enables P0.3 as a cause of a Keyboard Interrupt.
Reserved. Must be 0.
When set, enables P0.1 as a cause of a Keyboard Interrupt.
When set, enables P0.0 as a cause of a Keyboard Interrupt.
KBI.6
6
Figure 15. Keyboard Interrupt Register (KBI)
KBI.5
5
Figure 14. Keyboard Interrupt
KBI.4
4
21
KBI.3
(FROM IEN1 REGISTER)
3
EKB
2
–
KBI.1
1
KBI.0
0
KBF (KBI INTERRUPT)
Reset Value: 00h
SU01572
P87LPC761
SU01573
Preliminary data