P87C654X2BBD,157 NXP Semiconductors, P87C654X2BBD,157 Datasheet - Page 12

• Manufacturer Part Number: P87C654X2BBD,157
• Description: IC 80C51 MCU 16K OTP 44-LQFP
• Manufacturer: NXP Semiconductors
• Series: 87Cr

Specifications of P87C654X2BBD,157

• Program Memory Type: OTP
• Program Memory Size: 16KB (16K x 8)
• Package / Case: 44-LQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 33MHz
• Connectivity: I²C, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Processor Series: P87C6x
• Core: 80C51
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, UART
• Maximum Clock Frequency: 16 MHz, 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: + 70 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-3202; 935272902157; P87C654X2BBD

Philips Semiconductors
The Clock-Out frequency depends on the oscillator frequency and
the reload value of Timer 2 capture registers (RCAP2H, RCAP2L)
as shown in this equation:
Table 2. External Pin Status During Idle and Power-Down Mode
2004 Apr 20
80C51 8-bit microcontroller family
256B RAM, low voltage (2.7 to 5.5 V), low power, high speed
(30/33 MHz)
Idle
Idle
Power-down
Power-down
n
n =
MODE
(65536 * RCAP2H, RCAP2L)
Oscillator Frequency
2 in 6-clock mode
4 in 12-clock mode
PROGRAM MEMORY
External
External
Internal
Internal
16 kB OTP/ROM,
ALE
1
1
0
0
PSEN
1
1
0
0
12
Where (RCAP2H,RCAP2L) = the content of RCAP2H and RCAP2L
taken as a 16-bit unsigned integer.
In the Clock-Out mode Timer 2 roll-overs will not generate an
interrupt. This is similar to when it is used as a baud-rate generator.
It is possible to use Timer 2 as a baud-rate generator and a clock
generator simultaneously. Note, however, that the baud-rate and the
Clock-Out frequency will be the same.
PORT 0
Data
Float
Data
Float
P83C654X2/P87C654X2
PORT 1
Data
Data
Data
Data
PORT 2
Address
Data
Data
Data
Product data
PORT 3
Data
Data
Data
Data