參數(shù)資料
型號(hào)： 87LPC767
廠商： NXP Semiconductors N.V.
英文描述： Low power, low price, low pin count(20 pin) microcontroller with 4 kB OTP and 8-bit A/D(帶4 kB OTP和8位A/D的低功耗，低價(jià)格，少引腳（20引腳）的微控制器)
中文描述： 低功耗，低價(jià)格，低引腳數(shù)（20針）與4 KB的檢察官辦公室和8位A / D（帶4 KB的檢察官和8位A / D轉(zhuǎn)換的低功耗，低價(jià)格，少引腳（20引微控制器腳）的微控制器）
文件頁(yè)數(shù)： 51/61頁(yè)
文件大?。?/td> 296K
代理商： 87LPC767
Philips Semiconductors
Preliminary specification
87LPC767
Low power, low price, low pin count (20 pin)
microcontroller with 4 kB OTP and 8-bit A/D converter
2000 Feb 02
48
BIT
UCFG2.7, 6
UCFG2.5–0
SYMBOL
SB2, SB1
—
FUNCTION
EPROM security bits. See table entitled, “EPROM Security Bits” for details.
Reserved for future use.
—
SU01186
—
—
—
—
—
SB1
SB2
0
1
2
3
4
5
6
7
UCFG2
Unprogrammed Value: FFh
Address: FD01h
Figure 39. 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
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
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
°
C
Storage temperature range
–65 to +150
Voltage on RST/V
PP
pin to V
SS
Voltage on any other pin to V
SS
Maximum I
OL
per I/O pin
Power dissipation (based on package heat transfer, not device power consumption)
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.
0 to +11.0
V
–0.5 to V
DD
+0.5V
20
V
mA
1.5
W
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