P89LV51RD2BA PHILIPS [NXP Semiconductors], P89LV51RD2BA Datasheet - Page 50

• Manufacturer Part Number: P89LV51RD2BA
• Description: 8-bit 80C51 3 V low power 64 kB Flash microcontroller with 1 kB RAM
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Table 44:
9397 750 14342
Product data
ECOMn
0
x
x
x
1
1
1
1
CAPPn
0
1
0
1
0
0
0
0
PCA module modes (CCAPMn register)
7.8.1 PCA capture mode
CAPNn
0
0
1
1
0
0
0
0
Table 43:
To use one of the PCA modules in the capture mode
the CCAPM bits CAPN and CAPP for that module must be set. The external CEX
input for the module (on port 1) is sampled for a transition. When a valid transition
occurs the PCA hardware loads the value of the PCA counter registers (CH and CL)
into the module’s capture registers (CCAPnL and CCAPnH).
Bit
3
2
1
0
MATn
0
0
0
0
1
1
0
1
CCAPMn - PCA modules compare/capture register (address CCAPM0 0DAH,
CCAPM1 0DBH, CCAPM2 0DCH, CCAPM3 0DDH, CCAPM4 0DEH) bit desc.
Symbol
MATn
TOGn
PWMn
ECCFn
TOGn
0
0
0
0
0
1
0
x
Rev. 04 — 02 December 2004
PWMn
0
0
0
0
0
0
1
0
Description
Match. When MATn = 1 a match of the PCA counter with this
module’s compare/capture register causes the CCFn bit in CCON
to be set, flagging an interrupt.
Toggle. When TOGn = 1, a match of the PCA counter with this
module’s compare/capture register causes the CEXn pin to toggle.
Pulse Width Modulation Mode. PWMn = 1 enables the CEXn pin to
be used as a pulse width modulated output.
Enable CCF Interrupt. Enables compare/capture flag CCFn in the
CCON register to generate an interrupt.
ECCFn
0
x
x
x
x
x
0
x
P89LV51RB2/RC2/RD2
Module function
no operation
16-bit capture by a positive-edge trigger on
CEXn
16-bit capture by a negative-edge trigger on
CEXn
16-bit capture by any transition on CEXn
16-bit software timer
16-bit high speed output
8-bit PWM
Watchdog timer
8-bit microcontrollers with 80C51 core
(Figure
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
23) either one or both of
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