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| 型号： | P87C54UBBB |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless, low voltage 2.7V.5.5V, low power, high speed 33 MHz |
| 中文描述： | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | 10 X 10 MM, 1.75 MM HEIGHT, PLASTIC, SOT-307-2, QFP-44 |
| 文件页数： | 12/56页 |
| 文件大小： | 360K |
| 代理商： | P87C54UBBB |
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Philips Semiconductors
Product specification
8XC54/58
8XC51FA/FB/FC/80C51FA
8XC51RA+/RB+/RC+/RD+/80C51RA+
80C51 8-bit microcontroller family
8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33MHz)
2000 Aug 07
12
Table 2.
8XC51FA/FB/FC, 8XC51RA+/RB+/RC+/RD+ Special Function Registers
(Continued)
SYMBOL
DESCRIPTION
DIRECT
ADDRESS
BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION
MSB
D7
D6
D5
D4
LSB
RESET
VALUE
D3
D2
D1
D0
PSW*
Program Status Word
D0H
CY
AC
F0
RS1
RS0
OV
–
P
000000x0B
RACAP2H
#
RACAP2L
#
Timer 2 Capture High
Timer 2 Capture Low
CBH
CAH
00H
00H
SADDR#
SADEN#
Slave Address
Slave Address Mask
A9H
B9H
00H
00H
SBUF
Serial Data Buffer
99H
xxxxxxxxB
9F
9E
9D
9C
9B
9A
99
98
SCON*
Serial Control
98H
SM0/FE
SM1
SM2
REN
TB8
RB8
TI
RI
00H
SP
Stack Pointer
81H
07H
8F
8E
8D
8C
8B
8A
89
88
TCON*
Timer Control
88H
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
00H
CF
CE
CD
CC
CB
CA
C9
C8
T2CON*
Timer 2 Control
C8H
TF2
EXF2
RCLK
TCLK
EXEN2
TR2
C/T2
CP/RL2
00H
T2MOD#
Timer 2 Mode Control
C9H
–
–
–
–
–
–
T2OE
DCEN
xxxxxx00B
TH0
TH1
TH2#
TL0
TL1
TL2#
Timer High 0
Timer High 1
Timer High 2
Timer Low 0
Timer Low 1
Timer Low 2
8CH
8DH
CDH
8AH
8BH
CCH
00H
00H
00H
00H
00H
00H
TMOD
Timer Mode
89H
GATE
C/T
M1
M0
GATE
C/T
M1
M0
00H
WDTRST
HDW Watchdog
Timer Reset (RX+ only)
SFRs are bit addressable.
SFRs are modified from or added to the 80C51 SFRs.
Reserved bits.
0A6H
*
#
–
OSCILLATOR CHARACTERISTICS
XTAL1 and XTAL2 are the input and output, respectively, of an
inverting amplifier. The pins can be configured for use as an on-chip
oscillator.
To drive the device from an external clock source, XTAL1 should be
driven while XTAL2 is left unconnected. There are no requirements
on the duty cycle of the external clock signal, because the input to
the internal clock circuitry is through a divide-by-two flip-flop.
However, minimum and maximum high and low times specified in
the data sheet must be observed.
RESET
A reset is accomplished by holding the RST pin high for at least two
machine cycles (24 oscillator periods), while the oscillator is running.
To insure a good power-on reset, the RST pin must be high long
enough to allow the oscillator time to start up (normally a few
milliseconds) plus two machine cycles. At power-on, the voltage on
V
CC
and RST must come up at the same time for a proper start-up.
Ports 1, 2, and 3 will asynchronously be driven to their reset
condition when a voltage above V
IH1
(min.) is applied to RESET.
相关PDF资料 |
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| P87C54UBPN | 80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless, low voltage 2.7V.5.5V, low power, high speed 33 MHz |
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相关代理商/技术参数 |
参数描述 |
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| P87C54UBBB-S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| P87C54UBPN | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 8K-4K/256-1K OTP/ROM/ROMless, low voltage (2.7V-5.5V), low power, high speed (33 MHz) |
| P87C54UFAA | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless, low voltage 2.7V.5.5V, low power, high speed 33 MHz |
| P87C54UFAA-T | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| P87C54UFBB | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit CMOS (low voltage, low power and high speed) microcontroller families |
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