P80C554SFBD,157 NXP Semiconductors, P80C554SFBD,157 Datasheet - Page 23

• Manufacturer Part Number: P80C554SFBD,157
• Description: IC 80C51 MCU 8BIT ROMLESS 64LQFP
• Manufacturer: NXP Semiconductors
• Series: 80Cr

Specifications of P80C554SFBD,157

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 40
• Program Memory Type: ROMless
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Processor Series: P80C5x
• Core: 80C51
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: I2C, UART
• Maximum Clock Frequency: 8 MHz, 16 MHz
• Number Of Programmable I/os: 40
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• 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, 7 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-2086; 935268881157; P80C554SFBD

Philips Semiconductors
10-Bit Analog-to-Digital Conversion: Figure 21 shows the
elements of a successive approximation (SA) ADC. The ADC
contains a DAC which converts the contents of a successive
approximation register to a voltage (VDAC) which is compared to
the analog input voltage (Vin). The output of the comparator is fed to
the successive approximation control logic which controls the
successive approximation register. A conversion is initiated by
setting ADCS in the ADCON register. ADCS can be set by software
only or by either hardware or software.
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
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADCON
0
ANALOG INPUT
MULTIPLEXER
1
f
OSC
2
Figure 19. Functional Diagram of Pulse Width Modulated Outputs
3
Figure 20. Functional Diagram of Analog Input Circuitry
4
PRESCALER
PWMP
5
6
7
INTERNAL BUS
10-BIT A/D CONVERTER
2
C, PWM, capture/compare,
8-BIT COMPARATOR
8-BIT COMPARATOR
0
23
8-BIT COUNTER
The software only start mode is selected when control bit ADCON.5
(ADEX) = 0. A conversion is then started by setting control bit
ADCON.3 (ADCS). The hardware or software start mode is selected
when ADCON.5 = 1, and a conversion may be started by setting
ADCON.3 as above or by applying a rising edge to external pin
STADC. When a conversion is started by applying a rising edge, a
low level must be applied to STADC for at least one machine cycle
followed by a high level for at least one machine cycle.
1
PWM0
PWM1
2
3
4
5
6
OUTPUT
OUTPUT
BUFFER
BUFFER
7
ADCH
+
–
80C554/87C554
STADC
ANALOG REF.
ANALOG SUPPLY
ANALOG GROUND
SU01448
PWM0
PWM1
SU01467
Product data