cop87l84bc National Semiconductor Corporation, cop87l84bc Datasheet - Page 15

• Manufacturer Part Number: cop87l84bc
• Description: 8-bit Cmos Otp Microcontrollers With 16k Memory, Comparators, And Can Interface
• Manufacturer: National Semiconductor Corporation

Timers
PWM Control Register (PWMCON)(Address X’00A2)
The PWMCON Register Bits are:
Reserved This bit is reserved and should be zero.
ESEL
PWPND
PWIE
PWMD
PWON
Reserved
Bit 7
ESEL
Edge select bit, “1” for falling edge, “0” for rising
edge.
PWM interrupt pending bit.
PWM interrupt enable bit.
PWM Mode bit, “1” for PWM mode, “0” for fre-
quency monitor mode.
PWM start Bit, “1” to start timer, “0” to stop timer.
(Continued)
PWPND
PWIE
PWMD
FIGURE 12. PWM Timer Capture Mode Block Diagram
FIGURE 13. PWM Timer PWM Mode Block Diagram
PWON
PWEN1
PWEN0
Bit 0
15
PWEN1
Note: The associated bits in the configuration and data register of the I/O-
PWEN0
PWM Mode
The PWM timer can generate PWM signals at frequencies
up to 39 kHz (
Lower PWM frequencies can be programmed via the pres-
caler.
If the PWM mode bit (PWMD) in the PWM configuration reg-
ister (PWMCON) is set to “1” the timer operates in PWM
mode. In this mode, the timer generates a PWM signal with
port have to be setup as outputs and/or inputs in addition to setting the
PWEN bits.
Enable PWM1 output function on I/O port.
Enable PWM0 output/input function on I/O port.
@
t
c
= 1 µs) with a resolution of 255 parts.
DS101137-12
DS101137-13
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