P89V52X2FA,512 NXP Semiconductors, P89V52X2FA,512 Datasheet - Page 19

• Manufacturer Part Number: P89V52X2FA,512
• Description: IC 80C51 MCU FLASH 8K 44-PLCC
• Manufacturer: NXP Semiconductors
• Series: 89Vr

Specifications of P89V52X2FA,512

• Program Memory Type: FLASH
• Program Memory Size: 8KB (8K x 8)
• Package / Case: 44-PLCC
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: UART/USART
• Peripherals: POR
• Number Of I /o: 32
• Eeprom Size: 192 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: P89V5x
• Core: 80C51
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: UART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: OM11011 - BOARD FOR P89V52X2 44-TQFP622-1017 - BOARD 44-ZIF PLCC SOCKET622-1012 - BOARD FOR P89V52X2 44-TQFP622-1008 - BOARD FOR LPC9103 10-HVSON622-1002 - USB IN-CIRCUIT PROG LPC9XX
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4249-5; 935282528512; P89V52X2FA

NXP Semiconductors
P89V52X2_3
Product data sheet
6.9 Timer 2
Timer 2 is a 16-bit Timer/Counter which can operate as either an event timer or an event
counter, as selected by C/T2 in the special function register T2CON. Timer 2 has four
operating modes: Capture, Auto-reload (up or down counting), Clock-out, and Baud Rate
Generator which are selected according to
Table
Table 15.
Table 16.
Bit addressable; Reset value: 00H
Table 17.
RCLK+TCLK
0
0
0
1
X
Bit
7
6
5
Bit
Symbol
Fig 13. Timer/Counter 0 Mode 3 (two 8-bit counters)
17) and T2MOD
INT0 pin
TnGate
T0 pin
osc/6
TR0
Timer 2 operating mode
T2CON - Timer/Counter 2 control register (address C8H) bit allocation
T2CON - Timer/Counter 2 control register (address C8H) bit description
Symbol
TF2
EXF2
RCLK
TF2
7
CP/RL2
0
1
0
X
X
(Table 18
EXF2
Rev. 03 — 4 May 2009
6
osc/2
Description
Timer 2 overflow flag set by a Timer 2 overflow and must be cleared by
software. TF2 will not be set when either RCLK or TCLK = 1 or when
Timer 2 is in Clock-out mode.
Timer 2 external flag is set when Timer 2 is in capture, reload or baud
rate mode, EXEN2 = 1 and a negative transition on T2EX occurs. If
Timer 2 interrupt is enabled EXF2 = 1 causes the CPU to vector to the
Timer 2 interrupt routine. EXF2 must be cleared by software.
Receive clock flag. When set, causes the UART to use Timer 2
overflow pulses for its receive clock in modes 1 and 3. RCLK = 0
causes Timer 1 overflow to be used for the receive clock.
TR1
C/T = 0
C/T = 1
TR2
1
1
1
1
0
RCLK
and
5
Table
80C51 with 256 B RAM, 192 B data EEPROM
TCLK
Table 15
19).
control
control
4
T2OE
0
0
1
0
X
EXEN2
using T2CON
(8-bits)
(8-bits)
TH0
TL0
3
overflow
overflow
Mode
16-bit auto reload
16-bit capture
Programmable Clock-Out
Baud rate generator
off
TR2
2
(Table 16
P89V52X2
TF0
TF1
© NXP B.V. 2009. All rights reserved.
C/T2
1
002aaa522
and
interrupt
interrupt
CP/RL2
19 of 57
0