參數(shù)資料
型號： AT89LP52-20JU
廠商： Atmel
文件頁數(shù)： 104/117頁
文件大?。?/td> 0K
描述： IC MCU 8051 8K FLASH SPI 44PLCC
標準包裝： 27
系列： 89LP
核心處理器： 8051
芯體尺寸： 8-位
速度： 20MHz
連通性： EBI/EMI，I²C，SPI，UART/USART
外圍設備： 欠壓檢測/復位，POR，PWM，WDT
輸入/輸出數(shù)： 36
程序存儲器容量： 8KB（8K x 8）
程序存儲器類型： 閃存
RAM 容量： 256 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： 44-LCC（J 形引線）
包裝： *
87
3709D–MICRO–12/11
AT89LP51/52
Notes:
1. The default state for Tristate Ports is 00h. All other fuses default to FFh.
2. Changes to these fuses will only take effect after a device POR.
3. Changes to these fuses will only take effect after the ISP session terminates by bringing RST inactive.
17.8
User Signature
The User Signature Array contains 256 bytes of non-volatile memory in two 128-byte pages. The
User Signature is available for serial numbers, firmware revision information, date codes or other
user parameters. The User Signature Array may only be written by an external device when the
User Signature Programming Fuse is enabled. When the fuse is enabled, Chip Erase will also
erase the first page of the array. When the fuse is disabled, the array is not affected by write or
erase commands. Programming of the Signature Array can also be disabled by the Lock Bits.
However, reading the signature is always allowed and the array should not be used to store
security sensitive information. The User Signature Array may be modified during execution
through the In-Application Programming interface, regardless of the state of the User Signature
Programming fuse or Lock Bits, provided that the IAP Fuse is enabled. Note that the address of
the User Signature Array, as seen by the IAP interface, equals the User Signature address plus
256 (0100H–01FFH instead of 0000H–00FFH).
17.9
Programming Interface Timing
This section details general system timing sequences and constraints for entering or exiting In-
System Programming as well as parameters related to the Serial Peripheral Interface during
ISP. The general timing parameters for the following waveform figures are listed in section “Tim-
17.9.1
Power-up Sequence
Execute this sequence to enter programming mode immediately after power-up. In the RST pin
is disabled or if the ISP Fuse is disabled, this is the only method to enter programming (see
1.
Apply power between VDD and GND pins. RST should remain low.
2.
Wait at least t
PWRUP. and drive RST high if active-high otherwise keep low.
3.
Wait at least t
SUT for the internal Power-on Reset to complete. The value of tSUT will
depend on the current settings of the device.
4.
Start programming session.
07H
Tristate Ports
FFh: I/O Ports start in input-only mode (tristated) after reset
00h: I/O Ports start in quasi-bidirectional mode after reset
08H
In-Application Programming
FFh: In-Application Programming Disabled
00h: In-Application Programming Enabled
09H
R1 Enable
FFh: 5 M
Ω resistor on XTAL1 Disabled
00h: 5 M
Ω resistor on XTAL1 Enabled
Table 17-5.
User Configuration Fuse Definitions
Address
Fuse Name
Description
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相關代理商/技術參數(shù)
參數(shù)描述
AT89LP52-20MU 功能描述:8位微控制器 -MCU Single-Cycle 8051 8K ISP Flash MCU 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 安裝風格:SMD/SMT
AT89LP52-20PU 功能描述:8位微控制器 -MCU Single-Cycle 8051 8K ISP Flash MCU 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 安裝風格:SMD/SMT
AT89LP6440-20AU 功能描述:8位微控制器 -MCU Single-Cycle 8051 64K ISP Flash 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 安裝風格:SMD/SMT
AT89LP6440-20JU 功能描述:8位微控制器 -MCU Single-Cycle 8051 64K ISP Flash 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 安裝風格:SMD/SMT
AT89LP6440-20MU 功能描述:8位微控制器 -MCU Single-Cycle 8051 64K ISP Flash 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 安裝風格:SMD/SMT
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