P87LPC768 NXP Semiconductors, P87LPC768 Datasheet - Page 18

• Manufacturer Part Number: P87LPC768
• Description: The P87LPC768 is a 20-pin single-chip microcontroller designed forlow pin count applications demanding high-integration, low costsolutions over a wide range of performance requirements
• Manufacturer: NXP Semiconductors

Philips Semiconductors
The word “Shadow” in the above refers to the fact that writes are not
into the register that controls the counter; rather they are into a
holding register. As described below the transfer of data from this
2002 Mar 12
CNSW0: Counter Shadow register 0
Addr:
Reset Value:
CNSW1: Counter Shadow register 1
Addr:
Reset Value:
Low power, low price, low pin count (20 pin) microcontroller
with 4 kB OTP 8-bit A/D, Pulse Width Modulator
10 BIT COUNTER
10 BIT COUNTER
10 BIT SHADOW
REGISTER
REGISTER
BRAKE
RUN
Unused
CNSW7
BKCH
BRAKE CONTROL LOGIC
7
7
XFER
BKPS
0D1H
FFH
0D2H
FFH
Unused
CNSW6
A
10 BIT COMPARE
10 BIT SHADOW
6
REGISTER
REGISTER
6
BPEN
A>B
B
BKEN
Unused
CNSW5
5
5
Figure 8. PWM Block Diagram
2:1 MUX
A
PWM3
10 BIT COMPARE
10 BIT SHADOW
PWM3I
PWM3B
INTERNAL BUS
Unused
REGISTER
REGISTER
CNSW4
A>B
4
4
16
B
holding register, into the register which contains the actual reload
value, is controlled by the user’s program.
2:1 MUX
PWM2
Unused
PWM2I
PWM2B
CNSW3
3
3
A
10 BIT COMPARE
10 BIT SHADOW
REGISTER
REGISTER
A>B
Unused
2:1 MUX
CNSW2
PWM1
2
PWM1I
B
PWM1B
2
CNSW9
CNSW1
1
A
10 BIT COMPARE
10 BIT SHADOW
1
2:1 MUX
PWM0
REGISTER
REGISTER
P87LPC768
PWM0I
PWM0B
A>B
B
Preliminary data
CNSW8
CNSW0
SU01364
0
0