P87C52X2FN,112 NXP Semiconductors, P87C52X2FN,112 Datasheet - Page 15

• Manufacturer Part Number: P87C52X2FN,112
• Description: IC 80C51 MCU 256 RAM 40DIP
• Manufacturer: NXP Semiconductors
• Series: 87Cr

Specifications of P87C52X2FN,112

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR
• Number Of I /o: 32
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Processor Series: P87C5x
• Core: 80C51
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: UART
• Maximum Clock Frequency: 33 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Package: 40PDIP
• Device Core: 80C51
• Family Name: 87C
• Maximum Speed: 33 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 935269602112; P87C52X2FN; P87C52X2FN

Philips Semiconductors
2003 Jan 24
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
TMOD
*d = 6 in 6-clock mode; d = 12 in 12-clock mode.
Timer n
Gate bit
INTn Pin
BIT
TMOD.3/
TMOD.7
TMOD.2/
TMOD.6
Address = 89H
Not Bit Addressable
OSC
Tn Pin
SYMBOL
GATE
C/T
M1
0
0
1
1
1
TRn
M0
0
1
0
1
1
d*
FUNCTION
Gating control when set. Timer/Counter “n” is enabled only while “INTn” pin is high and
“TRn” control pin is set. when cleared Timer “n” is enabled whenever “TRn” control bit is set.
Timer or Counter Selector cleared for Timer operation (input from internal system clock.)
Set for Counter operation (input from “Tn” input pin).
OPERATING
8048 Timer: “TLn” serves as 5-bit prescaler.
16-bit Timer/Counter: “THn” and “TLn” are cascaded; there is no prescaler.
8-bit auto-reload Timer/Counter: “THn” holds a value which is to be reloaded
into “TLn” each time it overflows.
(Timer 0) TL0 is an 8-bit Timer/Counter controlled by the standard Timer 0 control bits.
TH0 is an 8-bit timer only controlled by Timer 1 control bits.
(Timer 1) Timer/Counter 1 stopped.
Figure 1. Timer/Counter 0/1 Mode Control (TMOD) Register
Figure 2. Timer/Counter 0/1 Mode 0: 13-Bit Timer/Counter
GATE
7
C/T = 0
C/T = 1
C/T
6
TIMER 1
M1
5
M0
4
Control
15
GATE
3
C/T
2
TIMER 0
(5 Bits)
TLn
M1
1
(8 Bits)
THn
P80C3xX2; P80C5xX2;
M0
0
Reset Value = 00H
TFn
SU01580
SU01618
P87C5xX2
Interrupt
Product data