mc68hc908gt8 Freescale Semiconductor, Inc, mc68hc908gt8 Datasheet - Page 134
![no-image](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_sml.jpg)
mc68hc908gt8
Manufacturer Part Number
mc68hc908gt8
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908GT8.pdf
(292 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
mc68hc908gt8CB
Manufacturer:
FRE/MOT
Quantity:
20 000
Company:
Part Number:
mc68hc908gt8CFB
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
mc68hc908gt8CFBE
Manufacturer:
MOTOROLA
Quantity:
2 500
- Current page: 134 of 292
- Download datasheet (4Mb)
Input/Output (I/O) Ports (PORTS)
When bit DDRDx is a 1, reading address $0003 reads the PTDx data latch. When bit DDRDx is a 0,
reading address $0003 reads the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
12.5.3 Port D Input Pullup Enable Register
The port D input pullup enable register (PTDPUE) contains a software configurable pullup device for each
of the eight port D pins. Each bit is individually configurable and requires that the data direction register,
DDRD, bit be configured as an input. Each pullup is automatically and dynamically disabled when a port
bit’s DDRD is configured for output mode.
PTDPUE7–PTDPUE0 — Port D Input Pullup Enable Bits
12.6 Port E
Port E is a 5-bit special-function port that shares two of its pins with the serial communications interface
(SCI) module and two of its pins with the internal clock generator (ICG).
134
1. X = Don’t care
2. I/O pin pulled up to V
3. Writing affects data register, but does not affect input.
4. Hi-Z = High imp[edance
PTDPUE
These writable bits are software programmable to enable pullup devices on an input port bit.
Bit
X
1
0
1 = Corresponding port D pin configured to have internal pullup
0 = Corresponding port D pin has internal pullup disconnected
Address:
DDRD
Reset:
Read:
Write:
Bit
0
0
1
MC68HC908GT16 • MC68HC908GT8 • MC68HC08GT16 Data Sheet, Rev. 5.0
Figure 12-16. Port D Input Pullup Enable Register (PTDPUE)
DD
PTDPUE7
$000F
Bit 7
by internal pullup device.
0
PTD
X
Bit
X
X
(1)
PTDPUE6
6
0
Input, Hi-Z
Input, V
Table 12-5. Port D Pin Functions
I/O Pin
Output
Mode
PTDPUE5
DD
(2)
(4)
5
0
Table 12-5
PTDPUE4
Accesses to DDRD
DDRD7–DDRD0
DDRD7–DDRD0
DDRD7–DDRD0
4
0
Read/Write
PTDPUE3
summarizes the operation of the port D pins.
3
0
PTDPUE2
2
0
PTD7–PTD0
Read
Pin
Pin
PTDPUE1
Accesses to PTD
1
0
Freescale Semiconductor
PTDPUE0
Bit 0
0
PTD7–PTD0
PTD7–PTD0
PTD7–PTD0
Write
(3)
(3)
Related parts for mc68hc908gt8
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![MC14560BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC12034AP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MPIC2112P](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC14520BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC12026AP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC145152P2](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC68HC11A0P](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MCM6726DWJ10](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC44355](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC13282AP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC14519BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC14495P1](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![SN74LS796N](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC142100CP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC34014P](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: