參數(shù)資料
型號: P87C52SBBB,557
廠商: NXP Semiconductors
文件頁數(shù): 25/38頁
文件大?。?/td> 0K
描述: IC 80C51 MCU 8K OTP 44-PQFP
產(chǎn)品培訓(xùn)模塊: Migrating from 8/16-Bit MCUs to 32-Bit ARMs
標(biāo)準(zhǔn)包裝: 480
系列: 87C
核心處理器: 8051
芯體尺寸: 8-位
速度: 16MHz
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: 8KB(8K x 8)
程序存儲器類型: OTP
RAM 容量: 256 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: 0°C ~ 70°C
封裝/外殼: 44-QFP
包裝: 托盤
產(chǎn)品目錄頁面: 705 (CN2011-ZH PDF)
其它名稱: 568-1248
935252880557
P87C52SBBB
Philips Semiconductors
Product specification
80C51/87C51/80C52/87C52
80C51 8-bit microcontroller family
4 K/8 K OTP/ROM low voltage (2.7 V–5.5 V),
low power, high speed (33 MHz), 128/256 B RAM
2000 Aug 07
31
Table 9. Program Security Bits for EPROM Devices
PROGRAM LOCK BITS1, 2
SB1
SB2
SB3
PROTECTION DESCRIPTION
1
U
No Program Security features enabled. (Code verify will still be encrypted by the Encryption Array if
programmed.)
2
P
U
MOVC instructions executed from external program memory are disabled from fetching code bytes
from internal memory, EA is sampled and latched on Reset, and further programming of the EPROM
is disabled.
3
P
U
Same as 2, also verify is disabled.
4
P
Same as 3, external execution is disabled. Internal data RAM is not accessible.
NOTES:
1. P – programmed. U – unprogrammed.
2. Any other combination of the security bits is not defined.
A0–A7
1
4–6MHz
+5V
PGM DATA
+12.75V
5 PULSES TO GROUND
0
1
0
A8–A12
P1
RST
P3.6
P3.7
XTAL2
XTAL1
VSS
VCC
P0
EA/VPP
ALE/PROG
PSEN
P2.7
P2.6
P2.0–P2.5
EPROM/OTP
SU00873
Figure 26. Programming Configuration
ALE/PROG:
1
0
1
0
5 PULSES
tGLGH = 100s±10s
tGHGL = 10s MIN
SU00875
12
34
5
SEE EXPLODED VIEW BELOW
1
Figure 27. PROG Waveform
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