參數(shù)資料
型號： AT89LP216-20PU
廠商： Atmel
文件頁數(shù)： 7/98頁
文件大?。?/td> 0K
描述： MCU 8051 2K FLASH 20MHZ 16-PDIP
產(chǎn)品培訓(xùn)模塊： MCU Product Line Introduction
標(biāo)準(zhǔn)包裝： 30
系列： 89LP
核心處理器： 8051
芯體尺寸： 8-位
速度： 20MHz
連通性： SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 14
程序存儲器容量： 2KB（2K x 8）
程序存儲器類型： 閃存
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 2.4 V ~ 5.5 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 16-DIP（0.300"，7.62mm）
包裝： 管件
15
3621E–MICRO–11/10
AT89LP216
10.2
Brown-out Reset
The AT89LP216 has an on-chip Brown-out Detection (BOD) circuit for monitoring the V
CC level
during operation by comparing it to a fixed trigger level. The trigger level for the BOD is nomi-
nally 2.2V. The purpose of the BOD is to ensure that if V
CC fails or dips while executing at speed,
the system will gracefully enter reset without the possibility of errors induced by incorrect execu-
tion. A BOD sequence is shown in Figure 10-3. When V
CC decreases to a value below the
trigger level V
BOD, the internal reset is immediately activated. When VCC increases above the
trigger level, the start-up timer releases the internal reset after the specified time-out period has
expired (Table 10-1). The Brown-out Detector must be enabled by setting the BOD Enable Fuse.
Figure 10-3. Brown-out Detector Reset
10.3
External Reset
The P1.3/RST pin can function as either an active-LOW reset input or as a digital general-pur-
pose I/O, P1.3. The Reset Pin Enable Fuse, when set to “1”, enables the external reset input
function on P1.3. (See “User Configuration Fuses” on page 71.) When cleared, P1.3 may be
used as an input or output pin. When configured as a reset input, the pin must be held low for at
least two clock cycles to trigger the internal reset.
Note:
During a power-up sequence, the fuse selection is always overridden and therefore the pin will
always function as a reset input. An external circuit connected to this pin should not hold this
pin LOW during a power-on sequence as this will keep the device in reset until the pin tran-
sitions high. After the power-up delay, this input will function either as an external reset input or
as a digital input as defined by the fuse bit. Only a power-up reset will temporarily override the
selection defined by the reset fuse bit. Other sources of reset will not override the reset fuse bit.
P1.3/RST also serves as the In-System Programming (ISP) enable. ISP is enabled when the
external reset pin is held low. When the reset pin is disabled by the fuse, ISP may only be entered
by pulling P1.3 low during power-up.
Table 10-1.
Start-up Timer Settings
SUT Fuse 1
SUT Fuse 0
Clock Source
t
SUT (± 5%)
00
Internal RC/External Clock
16 s
Crystal Oscillator
1024 s
01
Internal RC/External Clock
512 s
Crystal Oscillator
2048 s
10
Internal RC/External Clock
1024 s
Crystal Oscillator
4096 s
11
Internal RC/External Clock
4096 s
Crystal Oscillator
16384 s
VCC
Time-out
VPOR
Internal
Reset
tSUT
VBOD
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT89LP216-20SU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
AT89LP216-20XU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
AT89LP3240-20AU 功能描述:8位微控制器 -MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
AT89LP3240-20JU 功能描述:8位微控制器 -MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
AT89LP3240-20MU 功能描述:8位微控制器 -MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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