P80C557E4EFB/01,51 NXP Semiconductors, P80C557E4EFB/01,51 Datasheet - Page 25

• Manufacturer Part Number: P80C557E4EFB/01,51
• Description: IC 80C51 MCU 1024 ROMLESS 80QFP
• Manufacturer: NXP Semiconductors
• Series: 80Cr

Specifications of P80C557E4EFB/01,51

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 40
• Program Memory Size: -
• Program Memory Type: ROMless
• Eeprom Size: -
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-BQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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