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P89V52X2_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 4 May 2009
43 of 57
NXP Semiconductors
P89V52X2
80C51 with 256 B RAM, 192 B data EEPROM
[1]
This parameter is measured only for initial qualication and after a design or process change that could affect this parameter.
[2]
Under steady state (non-transient) conditions, IOL must be externally limited as follows:
a) Maximum IOL per 8-bit port: 26 mA
b) Maximum IOL total for all outputs: 71 mA
c) If IOL exceeds the test condition, VOH may exceed the related specication. Pins are not guaranteed to sink current greater than the
listed test conditions.
[3]
Capacitive loading on Ports 0 and 2 may cause spurious noise to be superimposed on the VOL of ALE and Ports 1 and 3. The noise due
to external bus capacitance discharging into the Port 0 and 2 pins when the pins make 1-to-0 transitions during bus operations. In the
worst cases (capacitive loading > 100 pF), the noise pulse on the ALE pin may exceed 0.8 V. In such cases, it may be desirable to
qualify ALE with a Schmitt trigger, or use an address latch with a Schmitt trigger STROBE input.
[4]
Load capacitance for Port 0, ALE and PSEN = 100 pF, load capacitance for all other outputs = 80 pF.
[5]
Capacitive loading on Ports 0 and 2 may cause the VOH on ALE and PSEN to momentarily fall below the VDD 0.7 specication when
the address bits are stabilizing.
[6]
Pins of Ports 1, 2 and 3 source a transition current when they are being externally driven from 1 to 0. The transition current reaches its
maximum value when VI is approximately 2 V.
[7]
Pin capacitance is characterized but not tested. EA = 25 pF (max).
Rpd
pull-down
resistance
on pin RST
40
-
225
k
Ciss
input capacitance
@ 1 MHz, Tamb =25 °C,
VI =0V
[7] -
-
15
pF
IDD(oper)
operating supply
current
fosc = 12 MHz
-
3
mA
fosc = 40 MHz
-
7
mA
IDD(idle)
Idle mode supply
current
fosc = 12 MHz
-
1.7
mA
fosc = 40 MHz
-
3
mA
IDD(pd)
Power-down mode
supply current
minimum VDD =2V
-
15
A
Table 44.
Static characteristics …continued
Tamb = 40 °C to +85 °C; VDD = 2.7 V to 5.5 V; VSS =0V
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
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| PIC18F67K90-E/MR | 功能描述:8位微控制器 -MCU 128KB Flash 4KB RAM LCD 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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| PIC18F67K90-I/MR | 功能描述:8位微控制器 -MCU 128kB Flash 4kB RAM LCD 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 |
| PIC18F67K90-I/MRRSL | 功能描述:8位微控制器 -MCU 128kB Flash 4kB RAM LCD Rev A3 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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