P8XC557E4 NXP Semiconductors, P8XC557E4 Datasheet - Page 25
![The P80C557E4/P83C557E4/P89C557E4 (hereafter generically referred to as P8xC557E4) single-chip 8-bit microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family](/photos/41/53/415310/sot318-2_3d_sml.gif)
P8XC557E4
Manufacturer Part Number
P8XC557E4
Description
The P80C557E4/P83C557E4/P89C557E4 (hereafter generically referred to as P8xC557E4) single-chip 8-bit microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family
Manufacturer
NXP Semiconductors
Datasheet
1.P8XC557E4.pdf
(72 pages)
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Philips Semiconductors
Table 15. Description of TM2CON bits
Table 16. Timer 2 prescaler select
Table 17. Timer 2 mode select
1999 Mar 02
Single-chip 8-bit microcontroller
SYMBOL
T2MS1
T2MS0
T2MS1
T2IS1
T2IS0
T2ER
T2BO
T2P1
T2P0
T2P1
0
0
1
1
0
0
1
1
TM2CON (EAH)
TM2CON.7
TM2CON.6
TM2CON.5
TM2CON.4
TM2CON.3
TM2CON.2
TM2CON.1
TM2CON.0
T2MS0
T2P0
BIT
0
1
0
1
0
1
0
1
T2IS1
Timer T2 16-bit overflow interrupt select
Timer T2 byte overflow interrupt select
Timer T2 external reset enable. When this bit is set, Timer T2 may be reset by a rising edge on RT2 (P1.5).
Timer T2 byte overflow interrupt flag
Timer T2 prescaler select
Timer T2 mode select
Clock source
Clock source/2
Clock source/4
Clock source/8
Timer T2 halted (off)
T2 clock source = f
Test mode; do not use
T2 clock source = pin T2
7
T2IS0
Figure 22. T2 control register (TM2CON).
6
CLK
/12
T2ER
5
25
T2BO
4
P83C557E4/P80C557E4/P89C557E4
MODE SELECTED
TIMER T2 CLOCK
FUNCTION
T2P1
3
T2P0
2
T2MS1
1
Product specification
T2MS0
0
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