MC68HC908SR12CFA Freescale Semiconductor, MC68HC908SR12CFA Datasheet - Page 207

• Manufacturer Part Number: MC68HC908SR12CFA
• Description: MICROCONTROLLER 48 PIN
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908SR12CFA

• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Q1145673

12.5 Timebase Register Description
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Address:
The timebase has one register, the TBCR, which is used to enable the
timebase interrupts and set the rate.
TBIF — Timebase Interrupt Flag
TBR2–TBR0 — Timebase Rate Selection
Reset:
Read:
Write:
Table 12-1. Timebase Rate Selection for OSCCLK = 32.768 kHz
TBR2
This read-only flag bit is set when the timebase counter has rolled
over.
These read/write bits are used to select the rate of timebase interrupts
as shown in
0
0
0
0
1
1
1
1
1 = Timebase interrupt pending
0 = Timebase interrupt not pending
$0046
TBIF
Bit 7
Figure 12-2. Timebase Control Register (TBCR)
0
TBR1
Timebase Module (TBM)
0
0
1
1
0
0
1
1
= Unimplemented
Table
TBR2
6
0
TBR0
12-1.
0
1
0
1
0
1
0
1
TBR1
5
0
Divider
262144
131072
65536
32768
TBR0
64
32
16
8
4
0
TACK
R
3
0
0
Timebase Interrupt Rate
0.125
1024
2048
4096
Timebase Register Description
0.25
512
0.5
Hz
1
= Reserved
TBIE
Timebase Module (TBM)
2
0
TBON
1
0
~0.24
8000
4000
2000
1000
~0.5
ms
Data Sheet
~2
~1
Bit 0
R
0
207