P80C557E4EFB NXP Semiconductors, P80C557E4EFB Datasheet - Page 16

• Manufacturer Part Number: P80C557E4EFB
• Manufacturer: NXP Semiconductors

Specifications of P80C557E4EFB

• Cpu Family: 80C
• Device Core: 80C51
• Device Core Size: 8b
• Frequency (max): 16MHz
• Interface Type: I2C/UART
• Program Memory Type: ROMLess
• Program Memory Size: Not Required
• Total Internal Ram Size: 1KB
• # I/os (max): 40
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 80
• Package Type: PQFP
• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
Table 8. Description of PWM1 bits
1999 Mar 02
Single-chip 8-bit microcontroller
PWM1 (FDH)
PWM1.0 to 7
BIT
PWM1.7
f
1/2
CLK
7
Figure 13. Functional Diagram of Pulse Width Modulated Outputs.
PWM1.6
LOW/HIGH ration of PWM1 signal =
Prescaler
PWMP
6
Figure 12. Pulse width register PWM1.
PWM1.5
5
8-Bit Comparator
8-Bit Comparator
PWM1.4
16
8-Bit Counter
4
P83C557E4/P80C557E4/P89C557E4
PWM0
PWM1
255 – (PWM1)
PWM1.3
3
FUNCTION
(PWM1)
PWM1.2
2
Output
Output
Buffer
Buffer
PWM1.1
1
Product specification
PWM0
PWM1
PWM1.0
0