MC68HC705SR3 MOTOROLA [Motorola, Inc], MC68HC705SR3 Datasheet - Page 31

• Manufacturer Part Number: MC68HC705SR3
• Description: High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller Units
• Manufacturer: MOTOROLA [Motorola, Inc]

3.6
Ports B, C, and D have 20K
setting appropriate bits in the Port Option Register (at $0A).
3.6.1
PIL — PB5:PB7 current drive select
PDP — Port D Pull-up
MC68HC05SR3
Port Option Register (POPR)
1 (set)
0 (clear) –
1 (set)
0 (clear) –
Programmable Pull-Up Devices
Port Option Register
Freescale Semiconductor, Inc.
–
–
For More Information On This Product,
PB5-PB7 are configured to 2mA drive port.
PB5-PB7 are configured to 10mA drive port.
The internal 20K pull-up resistors are connected to the inputs of
Port D.
No pull-up resistor is connected to the inputs of Port D.
Figure 3-5 Typical I
Address bit 7
Go to: www.freescale.com
$0A
pull-up resistors, which can be connected or disconnected, by
–1
–2
–3
–4
–5
0
INPUT/OUTPUT PORTS
0
best case
worst case
PB5-PB7 in low current mode
worst case
typical
typical
best case
bit 6
1
OL
V
OH
bit 5
PIL
vs V
(volts)
OL
All ports
bit 4
PDP
2
@V
DD
bit 3
PCP
=3V
3
bit 2
PBP
bit 1
PB1
bit 0
PB0
MOTOROLA
0000 0000
on reset
State
TPG
3-5
3