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EM78P221/2N
 
8-Bit Microcontroller with OTP ROM
 
 
64 
 
Product Specification (V1.0) 10.19.2007
 
 
(This specification is subject to change without further notice) 
C  Quality Assurance and  Reliability 
Test Category 
Test Conditions 
Remarks 
Solderability 
Solder temperature=245
±5°C, for 5 seconds up to the 
stopper using a rosin-type flux 
− 
Step 1:  TCT, 65°C (15 mins)~150°C (15 mins), 10 cycles 
Step 2:  Bake at 125°C, TD (endurance)=24 hrs 
Step 3:  Soak at 30°C/60% , TD (endurance)=192 hrs 
Pre-condition 
Step 4:  IR flow 3 cycles  
 (Pkg thickness: 2.5mm or  
 Pkg volume: 350mm
3
 ----225
±5°C) 
 (Pkg thickness: 2.5mm or  
 Pkg volume: 350mm
3
 ----240
±5°C) 
For SMD IC (such as 
SOP, QFP, SOJ, etc) 
Temperature cycle test 
-65°C (15 mins) ~ 150°C (15 mins), 200 cycles 
− 
Pressure cooker test 
TA =121°C, RH=100%, pressure=2 atm,  
TD (endurance)= 96 hrs 
− 
High temperature / 
High humidity test 
TA=85°C, RH=85% , TD (endurance)=168, 500 hrs 
− 
High-temperature 
storage life 
TA=150°C, TD (endurance)=500, 1000 hrs 
− 
High-temperature 
operating life 
TA=125°C, VCC=Max. Operating Voltage, 
TD (endurance) =168, 500, 1000 hrs 
− 
Latch-up 
TA=25°C, VCC=Max. operating voltage, 150mA/20V 
− 
ESD (HBM) 
TA=25°C, ± 3KV 
ESD (MM) 
TA=25°C, ± 300V 
IP_ND,OP_ND,IO_ND
IP_NS,OP_NS,IO_NS
IP_PD,OP_PD,IO_PD,
IP_PS,OP_PS,IO_PS,
VDD-VSS(+),VDD_VS
S (-) mode 
C.1 Address Trap Detect 
An address trap detect is one of the MCU embedded fail-safe functions that detects 
MCU malfunction caused by noise or the like.  Whenever the MCU attempts to fetch an 
instruction from a certain section of ROM, an internal recovery circuit is auto started.  If 
a noise caused address error is detected, the MCU will repeat execution of the program 
until the noise is eliminated.  The MCU will then continue to execute the next program.