MC68HC908GR4CFA Freescale Semiconductor, MC68HC908GR4CFA Datasheet - Page 331

• Manufacturer Part Number: MC68HC908GR4CFA
• Description: IC MCU 4K FLASH 8.2MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR4CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

21.5 Timebase Register Description
MC68HC908GR8 — Rev 4.0
MOTOROLA
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:
TBR2
Freescale Semiconductor, Inc.
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
Table 21-1. Timebase Rate Selection for OSC1 = 32.768 kHz
0
0
0
0
1
1
1
1
For More Information On This Product,
1 = Timebase interrupt pending
0 = Timebase interrupt not pending
$001C
TBIF
Bit 7
Figure 21-2. Timebase Control Register (TBCR)
0
TBR1
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Timebase Module (TBM)
0
0
1
1
0
0
1
1
Table
= Unimplemented
TBR2
6
0
21-1.
TBR0
0
1
0
1
0
1
0
1
TBR1
5
0
Divider
32,768
8192
2048
TBR0
128
64
32
16
8
4
0
TACK
3
0
0
Timebase Interrupt Rate
Timebase Register Description
1024
2048
4096
256
512
Hz
16
1
4
TBIE
2
0
Timebase Module (TBM)
TBON
1
0
Technical Data
~0.24
~ 3.9
1000
62.5
~0.5
250
ms
~2
~1
Reserved
Bit 0
0
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