MC9S12C128MFAE Freescale Semiconductor, MC9S12C128MFAE Datasheet - Page 140
![IC MCU 128K FLASH 25MHZ 48-LQFP](/photos/12/20/122066/mc9s12c128mfae_sml.jpg)
MC9S12C128MFAE
Manufacturer Part Number
MC9S12C128MFAE
Description
IC MCU 128K FLASH 25MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Specifications of MC9S12C128MFAE
Core Processor
HCS12
Core Size
16-Bit
Speed
25MHz
Connectivity
CAN, EBI/EMI, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
31
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.35 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
Processor Series
S12C
Core
HCS12
Data Bus Width
16 bit
Data Ram Size
4 KB
Interface Type
CAN/SCI/SPI
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
31
Number Of Timers
8
Operating Supply Voltage
3.3 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWHCS12
Development Tools By Supplier
M68EVB912C32EE
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
Package
48LQFP
Family Name
HCS12
Maximum Speed
25 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S12C128MFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 4 Multiplexed External Bus Interface (MEBIV3)
4.3.2.7
Read: Anytime when register is in the map
Write: Anytime when register is in the map
Data direction register E is associated with port E. For bits in port E that are configured as general-purpose
I/O lines, DDRE determines the primary direction of each of these pins. A 1 causes the associated bit to
be an output and a 0 causes the associated bit to be an input. Port E bit 1 (associated with IRQ) and bit 0
(associated with XIRQ) cannot be configured as outputs. Port E, bits 1 and 0, can be read regardless of
whether the alternate interrupt function is enabled. The value in a DDR bit also affects the source of data
for reads of the corresponding PORTE register. If the DDR bit is 0 (input) the buffered pin input state is
read. If the DDR bit is 1 (output) the associated port data register bit state is read.
This register is not in the on-chip memory map in expanded and special peripheral modes. Therefore, these
accesses will be echoed externally. Also, it is not in the map in expanded modes while the EME control bit
is set.
140
Module Base + 0x0009
Starting address location affected by INITRG register setting.
Reset
DDRE
Field
7:2
W
R
Bit 7
Data Direction Port E
0 Configure the corresponding I/O pin as an input
1 Configure the corresponding I/O pin as an output
Note: It is unwise to write PORTE and DDRE as a word access. If you are changing port E pins from inputs to
Data Direction Register E (DDRE)
0
7
To ensure that you read the value present on the PORTE pins, always wait
at least one cycle after writing to the DDRE register before reading from the
PORTE register.
outputs, the data may have extra transitions during the write. It is best to initialize PORTE before enabling
as outputs.
= Unimplemented or Reserved
6
0
6
Figure 4-11. Data Direction Register E (DDRE)
Table 4-5. DDRE Field Descriptions
MC9S12C-Family / MC9S12GC-Family
5
0
5
Rev 01.24
NOTE
4
0
4
Description
3
0
3
Bit 2
0
2
Freescale Semiconductor
0
0
1
0
0
0
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