參數(shù)資料
型號： P87LPC764FN,112
廠商： NXP Semiconductors
文件頁數(shù)： 41/60頁
文件大?。?/td> 0K
描述： IC 80C51 MCU 4K OTP 20-DIP
產(chǎn)品培訓(xùn)模塊： Migrating from 8/16-Bit MCUs to 32-Bit ARMs
標(biāo)準(zhǔn)包裝： 18
系列： LPC700
核心處理器： 8051
芯體尺寸： 8-位
速度： 20MHz
連通性： I²C，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，LED，POR，WDT
輸入/輸出數(shù)： 18
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 ~ 6 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 20-DIP（0.300"，7.62mm）
包裝： 管件
其它名稱： 568-3215-5
935266845112
P87LPC764FN
Philips Semiconductors
Product data
P87LPC764
Low power, low price, low pin count (20 pin)
microcontroller with 4 kbyte OTP
2003 Sep 03
45
BIT
SYMBOL
FUNCTION
UCFG2.7, 6
SB2, SB1
EPROM security bits. See table entitled, “EPROM Security Bits” for details.
UCFG2.5–0
—
Reserved for future use.
—
SU01186
—
SB1
SB2
0
1
2
3
4
5
6
7
UCFG2
Unprogrammed Value: FFh
Address: FD01h
Figure 37. EPROM System Configuration Byte 2 (UCFG2)
Security Bits
When neither of the security bits are programmed, the code in the EPROM can be verified. When only security bit 1 is programmed, all further
programming of the EPROM is disabled. At that point, only security bit 2 may still be programmed. When both security bits are programmed,
EPROM verify is also disabled.
Table 11. EPROM Security Bits
SB2
SB1
Protection Description
1
Both security bits unprogrammed. No program security features enabled. EPROM is programmable and verifiable.
1
0
Only security bit 1 programmed. Further EPROM programming is disabled. Security bit 2 may still be programmed.
0
1
Only security bit 2 programmed. This combination is not supported.
0
Both security bits programmed. All EPROM verification and programming are disabled.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNIT
Operating temperature under bias
–55 to +125
°C
Storage temperature range
–65 to +150
°C
Voltage on RST/VPP pin to VSS
0 to +11.0
V
Voltage on any other pin to VSS
–0.5 to VDD+0.5V
V
Maximum IOL per I/O pin
20
mA
Power dissipation (based on package heat transfer, not device power consumption)
1.5
W
NOTES:
1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any conditions other than those described in the AC and DC Electrical Characteristics section
of this specification are not implied.
2. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static
charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maximum.
3. Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to VSS unless otherwise noted.
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