MC908SR12MFAER Freescale Semiconductor, MC908SR12MFAER Datasheet - Page 206
MC908SR12MFAER
Manufacturer Part Number
MC908SR12MFAER
Description
IC MCU 12K FLASH 4/8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908SR12MFAE.pdf
(404 pages)
Specifications of MC908SR12MFAER
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
-
Other names
MC908SR12MFAER
MC908SR12MFAERTR
MC908SR12MFAERTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908SR12MFAER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Timebase Module (TBM)
12.4 Functional Description
Data Sheet
206
(See
From OSC module
OSCCLK
Section 7. Oscillator
÷ 2
÷ 2
÷ 2
÷ 2
(OSC).)
÷ 2
÷ 2
This module can generate a periodic interrupt by dividing the oscillator
clock frequency, OSCCLK. The counter is initialized to all 0s when
TBON bit is cleared. The counter, shown in
when the TBON bit is set. When the counter overflows at the tap
selected by TBR2:TBR0, the TBIF bit gets set. If the TBIE bit is set, an
interrupt request is sent to the CPU. The TBIF flag is cleared by writing
a 1 to the TACK bit. The first time the TBIF flag is set after enabling the
timebase module, the interrupt is generated at approximately half of the
overflow period. Subsequent events occur at the exact period.
The reference clock OSCCLK is derived from the oscillator module, see
7.3.2 TBM Reference Clock
÷ 2
Figure 12-1. Timebase Block Diagram
÷ 8
÷ 32768
÷ 2
÷ 2
÷ 16
÷ 65536
÷ 2
Timebase Module (TBM)
÷ 2
÷ 32
÷ 131072
÷ 2
÷ 2
÷ 64
÷ 2
÷ 262144
Selection.
÷ 2
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
÷ 2
÷ 2
SEL
Figure
÷ 2
÷ 2048
Freescale Semiconductor
12-1, starts counting
R
TBIF
TBMINT
TBON
TBIE
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