MCMC68HC05L16 Freescale Semiconductor, Inc, MCMC68HC05L16 Datasheet - Page 65

• Manufacturer Part Number: MCMC68HC05L16
• Description: M68hc05 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

7.5.5 Timebase Control Register 1
Read
Write
TBCLK — Timebase Clock
Bit 6 — Reserved
LCLK — LCD Clock
Bits 4–2 — Reserved
T2R1 and T2R0 — Timer 2 Prescale Rate Select Bits
Freescale Semiconductor
Anytime
Anytime (Only one write is allowed on bit 7 after reset.)
The TBCLK bit selects the timebase clock source. This bit is cleared on reset. After reset, write to this
bit is allowed only once.
This bit is not used and always reads as logic 0.
The LCLK bit selects the clock for the LCD driver. This bit is cleared on reset.
These bits are not used and always read as logic 0.
T2R1 and T2R0 select timer 2 clock rate. See
0 = XOSC clock selected
1 = OSC clock divided by 128 selected
0 = Divide by 64 selected
1 = Divide by 128 selected
Address:
Reset:
Read:
Write:
TBCLK
$0010
Bit 7
0
Figure 7-5. Timebase Control Register 1 (TBCR1)
MC68HC05L16 • MC68HC705L16 Data Sheet, Rev. 4.1
6
0
0
LCLK
5
0
9.3 Timer 2
4
0
0
3
0
0
for more detail.
2
0
0
T2R1
1
0
T2R0
Bit 0
0
Timebase
65