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87C51RA+ の電気的特性と機能

87C51RA+のメーカーはNXP Semiconductorsです、この部品の機能は「80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless/ low voltage 2.7V.5.5V/ low power/ high speed 33 MHz」です。


製品の詳細 ( Datasheet PDF )

部品番号 87C51RA+
部品説明 80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless/ low voltage 2.7V.5.5V/ low power/ high speed 33 MHz
メーカ NXP Semiconductors
ロゴ NXP Semiconductors ロゴ 




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87C51RA+ Datasheet, 87C51RA+ PDF,ピン配置, 機能
INTEGRATED CIRCUITS
8XC52/54/58/80C32
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 (33 MHz)
Product specification
Supersedes data of 1998 Jun 04
IC20 Data Handbook
1999 Apr 01
Philips
Semiconductors

1 Page





87C51RA+ pdf, ピン配列
Philips Semiconductors
80C51 8-bit microcontroller family
8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
Product specification
8XC52/54/58/80C32
8XC51FA/FB/FC/80C51FA
8XC51RA+/RB+/RC+/RD+/80C51RA+
BLOCK DIAGRAM
VCC
VSS
RAM ADDR
REGISTER
RAM
P0.0–P0.7
PORT 0
DRIVERS
PORT 0
LATCH
P2.0–P2.7
PORT 2
DRIVERS
PORT 2
LATCH
ROM/EPROM
B
REGISTER
ACC
TMP2
TMP1
STACK
POINTER
8
PROGRAM
ADDRESS
REGISTER
PSEN
ALE/PROG
EAVPP
RST
TIMING
AND
CONTROL
PD
OSCILLATOR
XTAL1
XTAL2
ALU
PSW
PORT 1
LATCH
PORT 1
DRIVERS
P1.0–P1.7
SFRs
TIMERS
P.C.A. (FA & RA+ only)
PORT 3
LATCH
BUFFER
PC
INCRE-
MENTER
8
PROGRAM
COUNTER
DPTR’S
MULTIPLE
PORT 3
DRIVERS
P3.0–P3.7
16
SU00831B
1999 Apr 01
3


3Pages


87C51RA+ 電子部品, 半導体
Philips Semiconductors
80C51 8-bit microcontroller family
8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
Product specification
8XC52/54/58/80C32
8XC51FA/FB/FC/80C51FA
8XC51RA+/RB+/RC+/RD+/80C51RA+
PIN DESCRIPTIONS (Continued)
PIN NUMBER
MNEMONIC DIP LCC QFP TYPE NAME AND FUNCTION
PSEN
29 32
26
O 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.
EA/VPP
31 35
29
I External Access Enable/Programming Supply Voltage: EA must be externally held low
to enable the device to fetch code from external program memory locations starting with
0000H. If EA is held high, the device executes from internal program memory unless the
program counter contains an address greater than 8k Devices (IFFFH), 16k Devices
(3FFFH) or 32k Devices (7FFFH). Since the RD+ has 64k Internal Memory, the RD+ will
execute only from internal memory when EA is held high. This pin also receives the 12.75V
programming supply voltage (VPP) during EPROM programming. If security bit 1 is
programmed, EA will be internally latched on Reset.
XTAL1
19 21
15
I Crystal 1: Input to the inverting oscillator amplifier and input to the internal clock generator
circuits.
XTAL2
18 20
14
O Crystal 2: Output from the inverting oscillator amplifier.
NOTE:
To avoid “latch-up” effect at power-on, the voltage on any pin at any time must not be higher than VCC + 0.5V or VSS – 0.5V, respectively.
1999 Apr 01
6

6 Page



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部品番号部品説明メーカ
87C51RA+

80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless/ low voltage 2.7V.5.5V/ low power/ high speed 33 MHz

NXP Semiconductors
NXP Semiconductors
87C51RA+

80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless/ low voltage 2.7V.5.5V/ low power/ high speed 33 MHz

NXP Semiconductors
NXP Semiconductors


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