P80C51FA-4A NXP Semiconductors, P80C51FA-4A Datasheet - Page 41

• Manufacturer Part Number: P80C51FA-4A
• Description: MCU 8-Bit 80C 80C51 CISC ROMLess 3.3V/5V 44-Pin PLCC Tube
• Manufacturer: NXP Semiconductors

Specifications of P80C51FA-4A

• Package: 44PLCC
• Device Core: 80C51
• Family Name: 80C
• Maximum Speed: 16 MHz
• Ram Size: 256 Byte
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: ROMLess
• Number Of Programmable I/os: 32
• Interface Type: UART
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 3

Philips Semiconductors
2000 Aug 07
WRITE TO SBUF
INSTRUCTION
PORT 0
PORT 2
INPUT DATA
OUTPUT DATA
80C51 8-bit microcontroller family
8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33MHz)
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
–0.5
P2.0–P2.7 OR A8–A15 FROM DPF
Figure 31. External Data Memory Write Cycle
t
XHQX
2
Figure 32. Shift Register Mode Timing
1
VALID
t
QVWX
Figure 33. External Clock Drive
0.2V
t
CHCL
0.7V
t
CC
t
XHDX
DATA OUT
QVWH
CC
3
t
WLWH
–0.1
2
VALID
41
t
CLCX
4
t
CLCL
VALID
3
t
CHCX
t
CLCH
t
WHLH
t
5
WHQX
8XC51RA+/RB+/RC+/RD+/80C51RA+
SU00009
VALID
4
A0–A7 FROM PCL
A0–A15 FROM PCH
6
8XC51FA/FB/FC/80C51FA
VALID
5
7
VALID
6
Product specification
8XC54/58
INSTR IN
8
SU00026
SET TI
VALID
SET RI
SU00027
7