MC908SR12MFAE Freescale Semiconductor, MC908SR12MFAE Datasheet - Page 104

• 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: -

Oscillator (OSC)
7.3.1 CGM Reference Clock Selection
Data Sheet
104
OSCSEL1
0
0
1
1
NOTE:
NOTE:
OSCSEL0
0
1
0
1
Address:
The clock generator module (CGM) reference clock (CGMXCLK) is the
reference clock input to the MCU. It is selected by programming two bits
in a FLASH memory location; the mask option register (MOR), at $FF80.
See
On the ROM device, the oscillator is selected by a ROM-mask layer at
factory.
The internal oscillator is a free running oscillator and is available after
each POR or reset. It is turned-off in stop mode by clearing the
STOP_ICLKEN bit in CONFIG2.
Erased:
Reset:
Read:
Write:
Table 7-1. CGMXCLK Clock Selection
5.6 Mask Option Register
CGMXCLK
OSCSEL1 OSCSEL0
RCCLK
XCLK
$FF80
ICLK
Bit 7
—
U
R
1
Figure 7-2. Mask Option Register (MOR)
= Reserved
Oscillator (OSC)
U
6
1
OSC2 Pin
output of
Inverting
X-TAL
f
f
BUS
BUS
—
R
U
5
1
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Not used
Internal oscillator generates the CGMXCLK.
RC oscillator generates the CGMXCLK.
Internal oscillator is available after each POR
or reset.
X-tal oscillator generates the CGMXCLK.
Internal oscillator is available after each POR
or reset.
(MOR).
R
U
4
1
R
U
3
1
Comments
Freescale Semiconductor
R
U
2
1
R
U
1
1
Bit 0
R
U
1