mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 375

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Notes:
POR rise-time ramp rate
Monitor mode entry voltage
Pullup resistors
PTD[0:7] configured as KBI[0:7]
RST, IRQ1, IRQ2
Low-voltage inhibit, trip falling voltage
Low-voltage inhibit, trip rising voltage
Schmitt trigger input low level trip voltage
RST, IRQ1, IRQ2, KBI[0:7]
Schmitt trigger input high level trip voltage
RST, IRQ1, IRQ2, KBI[0:7]
1. V
2. Typical values reflect average measurements at midpoint of voltage range, 25 °C only.
3. Run (operating) I
4. Wait I
5. STOP I
6. Maximum is highest voltage that POR is guaranteed.
7. If minimum V
8. R
100 pF on all outputs. C
Measured with all modules enabled.
all outputs. C
V
DD
DD
PU1
= 4.5 to 5.5 Vdc, V
is reached.
DD
and R
DD
measured using external square wave clock source. All inputs 0.2 V from rail. No dc loads. Less than 100 pF on
measured with OSC1 grounded, no port pins sourcing current.
PU2
L
DD
(8)
= 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects wait I
are measured at V
is not reached before the internal POR reset is released,
DD
Characteristic
measured using external square wave clock source. All inputs 0.2 V from rail. No dc loads. Less than
SS
(7)
L
= 0 Vdc, T
= 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects run I
Table 24-4. 5V DC Electrical Characteristics
DD
(1)
A
= 5.0V
= T
L
to T
Electrical Specifications
H
, unless otherwise noted.
Symbol
V
V
R
V
V
R
R
V
SCMTH
SCMTL
POR
LVII5
LVII5
TST
PU1
PU2
RST
1.4 × V
0.035
must be driven low externally until minimum
3.80
3.95
Min
24
24
—
—
DD
5.0V DC Electrical Characteristics
Typ
4.15
4.30
1.21
1.65
35
35
—
—
(2)
Electrical Specifications
Max
4.45
4.60
DD
42
42
—
—
—
8
.
Data Sheet
V/ms
Unit
kΩ
kΩ
V
V
V
V
V
DD
375
.