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MC68HC908LJ12_1 Datasheet, PDF (3/16 Pages) Freescale Semiconductor, Inc – Addendum to MC68HC908LJ12 Technical Data
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Freescale Semiconductor, Inc.
HC908LJ12AD/D
MC68HLC908LJ12
Table 2. DC Electrical Characteristics (2.4 to 2.7V) (Continued)
Characteristic(1)
Symbol
Min
Typ(2)
Max
Unit
Input current
IRQ
IIN
—
—
±1
µA
Capacitance
Ports (as input or output)
POR re-arm voltage(7)
COUT
—
CIN
—
VPOR
0
—
—
12
8
pF
—
100
mV
POR rise-time ramp rate(8)
Monitor mode entry voltage (at IRQ pin)
RPOR
0.02
—
VHI
1.5 × VDD
—
—
2 × VDD
V/ms
V
Pullup resistors(9)
PTA0–PTA3, PTD4–PTD7 configured as KBI0–KBI7 RPU1
—
RST, IRQ
RPU2
—
25
—
kΩ
27
—
kΩ
1. VDD = 2.4 to 2.7 Vdc, VSS = 0 Vdc, TA = TL to TH, unless otherwise noted.
2. Typical values reflect average measurements at midpoint of voltage range, 25 °C only.
3. Run (operating) IDD measured using external square wave clock source. All inputs 0.2 V from rail. No dc loads. Less than
100 pF on all outputs. CL = 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects run IDD.
4. Wait IDD measured using external square wave clock source. All inputs 0.2 V from rail. No dc loads. Less than 100 pF on
all outputs. CL = 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects wait IDD.
5. The 8kHz clock is from a 32kHz clock input at OSC1, for the driving the RTC.
6. LCD driver configured for low current mode.
7. Maximum is highest voltage that POR is guaranteed.
8. If minimum VDD is not reached before the internal POR reset is released, RST must be driven low externally until minimum
VDD is reached.
9. RPU1 and RPU2 are measured at VDD = 2.6V.
Table 3. DC Electrical Characteristics (2.7 to 3.3V)
Characteristic(1)
Symbol
Min
Typ(2)
Max
Unit
Output high voltage (ILOAD = –1.0 mA)
All ports
VOH
VDD – 0.4
—
—
V
Output low voltage
(ILOAD = 0.8mA) All ports
(ILOAD = 4.0 mA) PTB2–PTB5
(ILOAD = 10.0 mA) PTB0/TxD–PTB1
VOL
—
—
0.4
V
Input high voltage
All ports, RST, IRQ, OSC1
VIH
0.7 × VDD
—
VDD
V
Input low voltage
All ports, RST, IRQ, OSC1
VIL
VSS
—
0.3 × VDD
V
Addendum to MC68HC908LJ12 Technical Data
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