IA186EM/IA188EM
Data Sheet
8-Bit/16-Bit Microcontrollers
February 25, 2011
3.
Maximum Ratings, Thermal Characteristics, and DC Parameters
The absolute maximum ratings, thermal characteristics, and DC parameters are provided in
Tables 11 through 13, respectively.
Table 11. IA186EM and IA188EM Absolute Maximum Ratings
Parameter
Storage Temperature
Rating
−65°C to +125°C
Voltage on any Pin with Respect to vss −0.5V to +(vcc + 0.5) V
Table 12. IA186EM and IA188EM Thermal Characteristics
Symbol
TA
Characteristic
Ambient Temperature
Value
-40°C to 85°C
Table 13. DC Characteristics Over Commercial Operating Ranges
Symbol
VCC
VIL
VIL1
VIH
Parameter Description
Supply Voltage (@ 5V Operation)
Input Low Voltage (Except x1)
Clock Input Low Voltage (x1)
Input High Voltage (Except res_n
and x1)
Test Conditions
Min
4.5
−0.5
−0.5
2.0
Max
5.5
0.8
0.8
vcc +0.5
Unit
V
V
V
V
-
–
–
–
VIH1
VIH2
VOL
Input High Voltage (res_n)
Clock Input High Voltage (x1)
Output Low Voltages
–
–
2.4
vcc–0.8
–
–
2.4
vcc +0.5
vcc +0.5
0.45
0.45
vcc +0.5
vcc
V
V
V
V
V
V
IOL = 2.5 mA (s2_n–s0_n)
IOL = 2.0 mA (other)
IOH = −2.4 mA @ 2.4 V
IOH = −200 A @ vcc −0.5
a
VOH
Output High Voltages
vcc −0.5
–
b
ICC
ILI
5.9
mA/
MHz
Power Supply Current @ 0 C
vcc = 5.5 V
Input Leakage Current @ 0.5
MHz
Output Leakage Current @ 0.5
MHz
–
–
0.45 V VIN vcc
10
10
A
c
ILO
A
0.45 V VOUT vcc
VCLO
VCHO
Clock Output Low
Clock Output High
ICLO = 4.0 mA
–
0.45
–
V
V
vcc −0.5
ICHO = −500 A
a
The lcs_n/once0_n, mcs3_n–mcs0_n, ucs_n/once1_n, and rd_n pins have weak internal pullup resistors. Loading
the lcs_n/once0_n and ucs_n/once1_n pins in excess of IOH = −200 A during reset can cause the device to go into
ONCE mode.
b
Current is measured with the device in reset with the x1 and x2 driven and all other non-power pins open but held
high or low.
c
Testing is performed with the pins floating, either during hold or by invoking the ONCE mode.
®
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