參數(shù)資料
型號: P87C51X2FA,512
廠商: NXP Semiconductors
文件頁數(shù): 39/62頁
文件大?。?/td> 0K
描述: IC 80C51 MCU 128 RAM 44PLCC
標(biāo)準(zhǔn)包裝: 26
系列: 87C
核心處理器: 8051
芯體尺寸: 8-位
速度: 33MHz
連通性: EBI/EMI,UART/USART
外圍設(shè)備: POR
輸入/輸出數(shù): 32
程序存儲器容量: 4KB(4K x 8)
程序存儲器類型: OTP
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
其它名稱: 568-7911-5
568-7911-5-ND
568-8360-5
935269605512
P87C51X2FA
P87C51X2FA,512-ND
P87C51X2FA-ND
Philips Semiconductors
Product data
P80C3xX2; P80C5xX2;
P87C5xX2
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
2003 Jan 24
44
EXPLANATION OF THE AC SYMBOLS
Each timing symbol has five characters. The first character is always
‘t’ (= time). The other characters, depending on their positions,
indicate the name of a signal or the logical status of that signal. The
designations are:
A – Address
C – Clock
D – Input data
H – Logic level high
I – Instruction (program memory contents)
L – Logic level low, or ALE
P – PSEN
Q – Output data
R– RD signal
t – Time
V – Valid
W– WR signal
X – No longer a valid logic level
Z – Float
Examples: tAVLL = Time for address valid to ALE low.
tLLPL =Time for ALE low to PSEN low.
tPXIZ
ALE
PSEN
PORT 0
PORT 2
A0–A15
A8–A15
A0–A7
tAVLL
tPXIX
tLLAX
INSTR IN
tLHLL
tPLPH
tLLIV
tPLAZ
tLLPL
tAVIV
SU00006
tPLIV
Figure 27. External Program Memory Read Cycle
ALE
PSEN
PORT 0
PORT 2
RD
A0–A7
FROM RI OR DPL
DATA IN
A0–A7 FROM PCL
INSTR IN
P2.0–P2.7 OR A8–A15 FROM DPF
A0–A15 FROM PCH
tWHLH
tLLDV
tLLWL
tRLRH
tLLAX
tRLAZ
tAVLL
tRHDX
tRHDZ
tAVWL
tAVDV
tRLDV
SU00025
Figure 28. External Data Memory Read Cycle
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