P87C51RB2BBD NXP Semiconductors, P87C51RB2BBD Datasheet - Page 51

• Manufacturer Part Number: P87C51RB2BBD
• Description: MCU 8-Bit 87C 80C51 CISC 16KB EPROM 3.3V/5V 44-Pin LQFP Tray
• Manufacturer: NXP Semiconductors

Specifications of P87C51RB2BBD

• Package: 44LQFP
• Device Core: 80C51
• Family Name: 87C
• Maximum Speed: 33 MHz
• Ram Size: 512 Byte
• Program Memory Size: 16 KB
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 32
• Interface Type: UART
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 3

Philips Semiconductors
2003 Jan 24
WRITE TO SBUF
INSTRUCTION
PORT 0
PORT 2
INPUT DATA
OUTPUT DATA
80C51 8-bit microcontroller family
with 512B/1KB RAM, low voltage (2.7 to 5.5 V), low power, high
speed (30/33 MHz)
CLEAR RI
PSEN
ALE
WR
CLOCK
ALE
t
AVLL
0
t
QVXH
FROM RI OR DPL
A0–A7
t
t
1
XHDV
LLAX
t
AVWL
0
t
t
XLXL
VALID
LLWL
V
CC
0.45V
8KB/16KB/32KB/64KB OTP
–0.5
P2.0–P2.7 OR A8–A15 FROM DPF
Figure 36. External Data Memory Write Cycle
t
XHQX
2
Figure 37. Shift Register Mode Timing
VALID
1
t
QVWX
Figure 38. External Clock Drive
0.2V
t
CHCL
0.7V
t
CC
t
XHDX
DATA OUT
QVWH
CC
3
t
WLWH
–0.1
VALID
2
51
t
CLCX
4
t
CLCL
VALID
3
t
CHCX
t
CLCH
t
WHLH
t
5
WHQX
P87C51RA2/RB2/RC2/RD2
VALID
SU00009
4
A0–A7 FROM PCL
A0–A15 FROM PCH
6
VALID
5
7
VALID
6
INSTR IN
Product data
8
VALID
SU00026
SET TI
SET RI
SU00027
7