P87C554SBAA NXP Semiconductors, P87C554SBAA Datasheet - Page 25

• Manufacturer Part Number: P87C554SBAA
• Description: MCU 8-Bit 87C 80C51 CISC 16KB EPROM 5V 68-Pin PLCC Tube
• Manufacturer: NXP Semiconductors

Specifications of P87C554SBAA

• Package: 68PLCC
• Device Core: 80C51
• Family Name: 87C
• Maximum Speed: 16 MHz
• Ram Size: 512 Byte
• Program Memory Size: 16 KB
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 40
• Interface Type: I2C/UART
• On-chip Adc: 7-chx10-bit
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 3

Philips Semiconductors
2003 Jan 28
80C51 8-bit microcontroller – 6-clock operation
16K/512 OTP/ROMless, 7 channel 10 bit A/D, I
high I/O, 64L LQFP
1
Figure 22. A/D Conversion Flowchart
CONVERSION TIME
[BIT POINTER] = MSB
[BIT POINTER] + 1
COMPLETE
RESET SAR
TEST BIT
POINTER
[BIT]
TEST
SOC
EOC
2
N
C, PWM, capture/compare,
END
= 1
25
END OF CONVERSION
Start of Conversion
END
[BIT]
0
N
= 0
SU00959
80C554/87C554
Product data