P89C51RB2HBA NXP Semiconductors, P89C51RB2HBA Datasheet - Page 9

• Manufacturer Part Number: P89C51RB2HBA
• Manufacturer: NXP Semiconductors

Specifications of P89C51RB2HBA

• Cpu Family: 89C
• Device Core: 80C51
• Device Core Size: 8b
• Frequency (max): 33MHz
• Interface Type: UART
• Program Memory Type: Flash
• Program Memory Size: 16KB
• Total Internal Ram Size: 512Byte
• # I/os (max): 32
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Instruction Set Architecture: CISC
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: PLCC
• Lead Free Status / Rohs Status: Not Compliant

Philips Semiconductors
NOTE:
To avoid “latch-up” effect at power-on, the voltage on any pin (other than V
2002 May 24
PSEN
EA/V
XTAL1
XTAL2
MNEMONIC
MNEMONIC
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM
PP
PDIP
29
31
19
18
PIN NUMBER
PLCC
32
35
21
20
LQFP
26
29
15
14
TYPE
TYPE
O
O
I
I
Program Store Enable: The read strobe to external program memory. When
executing code from the external program memory, PSEN is activated twice each
machine cycle, except that two PSEN activations are skipped during each access
to external data memory. PSEN is not activated during fetches from internal
program memory.
External Access Enable/Programming Supply Voltage: EA must be externally
held low to enable the device to fetch code from external program memory
locations. If EA is held high, the device executes from internal program memory.
The value on the EA pin is latched when RST is released and any subsequent
changes have no effect. This pin also receives the programming supply voltage
(V
Crystal 1: Input to the inverting oscillator amplifier and input to the internal clock
generator circuits.
Crystal 2: Output from the inverting oscillator amplifier.
PP
) during Flash programming.
6
PP
) must not be higher than V
NAME AND FUNCTION
NAME AND FUNCTION
P89C51RB2/P89C51RC2/
CC
+ 0.5 V or less than V
P89C51RD2Hxx
SS
Product data
– 0.5 V.