MC908SR12MFAE Freescale Semiconductor, MC908SR12MFAE Datasheet - Page 323

• Manufacturer Part Number: MC908SR12MFAE
• Description: IC MCU 12K FLASH 8MHZ 48-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908SR12MFAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, Temp Sensor
• Number Of I /o: 31
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

18.3.3 Port A LED Control Register (LEDA)
18.4 Port B
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
NOTE:
Address:
The port-A LED control register (LEDA) controls the direct LED drive
capability on PTA5–PTA0 pins. Each bit is individually configurable and
requires that the data direction register, DDRA, bit be configured as an
output.
LEDA[5:0] — Port A LED Drive Enable Bits
Port B is a 7-bit special function port that shares four of its port pins with
the multi-master IIC (MMIIC) interface module, two of its port pins with
the serial communications interface (SCI) module, two of its port pins
with the timer interface module 2 (TIM2), and one of its port pins with the
IRQ module. See
Section 16. Serial Communications Interface
Timer Interface Module
(IRQ).
PTB3–PTB0 are open-drain pins when configured as outputs regardless
whether the pins are used as general purpose I/O pins, MMIIC pins, or
SCI pins. Therefore, when configured as general purpose output pins,
MMIIC pins, or SCI pins (the TxD pin), pullup resistors must be
connected to these pins.
Reset:
Read:
Write:
These read/write bits are software programmable to enable the direct
LED drive on an output port pin.
1 = Corresponding port A pin configured for direct LED drive
0 = Corresponding port A pin configured for standard drive
$000C
Bit 7
Figure 18-5. Port A LED Control Register (LEDA)
0
0
Input/Output (I/O) Ports
6
0
0
Section 17. Multi-Master IIC Interface
LEDA5
(TIM), and
5
0
LEDA4
4
0
Section 19. External Interrupt
LEDA3
3
0
(SCI),
LEDA2
2
0
Input/Output (I/O) Ports
Section 11.
LEDA1
(MMIIC),
1
0
Data Sheet
LEDA0
Bit 0
Port B
0
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