7 OSCILLATOR CIRCUIT (OSC)
60
EPSON
S1C17001 TECHNICAL MANUAL
7.5 8-bit OSC1 Timer Clock Control
The OSC module consists of a division circuit for generating the 8-bit OSC1 timer operation clock and a device
for controlling the feed. The 8-bit OSC1 timer is a programmable timer that operates only using the OSC1 division
clock. For detailed information, refer to “14 8-bit OSC1 Timer (T8OSC1).”
OSC1 clock
8-bit OSC1 timer
Division ratio selection
On/off control
Division circuit
(1/1 to 1/32)
Gate
Figure 7.5.1: 8-bit OSC1 timer clock control circuit
Clock division ratio selection
Select the OSC1 clock division ratio using T8O1CK[2:0] (D[3:1]/OSC_T8OSC1 register)
∗
T8O1CK[2:0]
: T8OSC1 Clock Division Ratio Select Bits in the T8OSC1 Clock Control (OSC_T8OSC1)
Register (D[3:1]/0x5065)
Table 7.5.1: T8OSC1 clock division ratio selection
T8O1CK[2:0]
Division ratio
0x7 to 0x6
Reserved
0x5
OSC1-1/32
0x4
OSC1-1/16
0x3
OSC1-1/8
0x2
OSC1-1/4
0x1
OSC1-1/2
0x0
OSC1-1/1
(Default: 0x0)
Clock feed control
The clock feed to the 8-bit OSC1 timer is controlled using T8O1CE (D0/OSC_T8OSC1 register).
The T8O1CE default setting is 0, which stops the clock feed. Setting T8O1CE to 1 sends the clock generated as
above to the 8-bit OSC1 timer. Stop the clock feed to reduce power consumption if 8-bit OSC1 timer operation
is not required.
∗
T8O1CE
: T8OSC1 Clock Enable Bit in the T8OSC1 Clock Control (OSC_T8OSC1) Register (D0/0x5065)
Содержание S1C17001
Страница 1: ...Technical Manual S1C17001 CMOS 16 BIT SINGLE CHIP MICROCONTROLLER ...
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Страница 33: ...4 POWER SUPPLY VOLTAGE 24 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 63: ...6 INITERRUPT CONTROLLER 54 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 87: ...8 CLOCK GENERATOR CLG 78 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 91: ...9 PRESCALER PSC 82 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 133: ...11 16 BIT TIMER T16 124 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 185: ...14 8 BIT OSC1 TIMER T8OSC1 176 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 211: ...16 STOPWATCH TIMER SWT 202 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
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