MC908GR16VFAE Freescale Semiconductor, MC908GR16VFAE Datasheet - Page 131
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MC908GR16VFAE
Manufacturer Part Number
MC908GR16VFAE
Description
IC MCU 16K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Specifications of MC908GR16VFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
LIN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
48-LQFP
Controller Family/series
HC08
No. Of I/o's
37
Ram Memory Size
1KB
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
SCI, SPI
Rohs Compliant
Yes
Processor Series
HC08GR
Core
HC08
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
33
Number Of Timers
4
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908GZ60E, M68CBL05CE, M68EML08GPGTE
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908GR16VFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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SS — Slave Select
12.5.2 Data Direction Register D
Data direction register D (DDRD) determines whether each port D pin is an input or an output. Writing a 1
to a DDRD bit enables the output buffer for the corresponding port D pin; a 0 disables the output buffer.
DDRD7–DDRD0 — Data Direction Register D Bits
Figure 12-15
Freescale Semiconductor
Data direction register D (DDRD) does not affect the data direction of port D pins that are being used
by the SPI module. However, the DDRD bits always determine whether reading port D returns the
states of the latches or the states of the pins. See
The PTD0/SS pin is the slave select input of the SPI module. When the SPE bit is clear, or when the
SPI master bit, SPMSTR, is set, the PTD0/SS pin is available for general-purpose I/O. When the SPI
is enabled, the DDRB0 bit in data direction register B (DDRB) has no effect on the PTD0/SS pin.
These read/write bits control port D data direction. Reset clears DDRD7–DDRD0, configuring all port
D pins as inputs.
1 = Corresponding port D pin configured as output
0 = Corresponding port D pin configured as input
shows the port D I/O logic.
Address:
Avoid glitches on port D pins by writing to the port D data register before
changing data direction register D bits from 0 to 1.
Reset:
Read:
Write:
READ DDRD ($0007)
WRITE DDRD ($0007)
WRITE PTD ($0003)
READ PTD ($0003)
DDRD7
$0007
Bit 7
PTDPUEx
0
Figure 12-14. Data Direction Register D (DDRD)
DDRD6
6
0
RESET
MC68HC908GR16 Data Sheet, Rev. 4.0
Figure 12-15. Port D I/O Circuit
VDD
DDRD5
5
0
INTERNAL
PULLUP
DEVICE
NOTE
DDRD4
DDRDx
PTDx
4
0
Table
DDRD3
12-5.
3
0
DDRD2
2
0
DDRD1
1
0
DDRD0
Bit 0
PTDx
0
Port D
131
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