C8051F960-A-GQ Silicon Labs, C8051F960-A-GQ Datasheet - Page 455
![no-image](/images/no-image-200.jpg)
C8051F960-A-GQ
Manufacturer Part Number
C8051F960-A-GQ
Description
8-bit Microcontrollers - MCU 128KB DC-DC LCD AES
Manufacturer
Silicon Labs
Datasheet
1.C8051F960-A-GQ.pdf
(492 pages)
Specifications of C8051F960-A-GQ
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
Maximum Clock Frequency
24.5 MHz
Program Memory Size
128 KB
Data Ram Size
8 KB
On-chip Adc
Yes
Operating Supply Voltage
1.8 V to 3.8 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
QFP-80
Mounting Style
SMD/SMT
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F960-A-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F960-A-GQR
Manufacturer:
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32.2.2. 8-bit Timers with Auto-Reload
When T2SPLIT is set, Timer 2 operates as two 8-bit timers (TMR2H and TMR2L). Both 8-bit timers oper-
ate in auto-reload mode as shown in Figure 32.5. TMR2RLL holds the reload value for TMR2L; TMR2RLH
holds the reload value for TMR2H. The TR2 bit in TMR2CN handles the run control for TMR2H. TMR2L is
always running when configured for 8-bit Mode.
Each 8-bit timer may be configured to use SYSCLK, SYSCLK divided by 12, SmaRTClock divided by 8 or
Comparator 0 output. The Timer 2 Clock Select bits (T2MH and T2ML in CKCON) select either SYSCLK or
the clock defined by the Timer 2 External Clock Select bits (T2XCLK[1:0] in TMR2CN), as follows:
The TF2H bit is set when TMR2H overflows from 0xFF to 0x00; the TF2L bit is set when TMR2L overflows
from 0xFF to 0x00. When Timer 2 interrupts are enabled (IE.5), an interrupt is generated each time
TMR2H overflows. If Timer 2 interrupts are enabled and TF2LEN (TMR2CN.5) is set, an interrupt is gener-
ated each time either TMR2L or TMR2H overflows. When TF2LEN is enabled, software must check the
TF2H and TF2L flags to determine the source of the Timer 2 interrupt. The TF2H and TF2L interrupt flags
are not cleared by hardware and must be manually cleared by software.
32.2.3. Comparator 0/SmaRTClock Capture Mode
The Capture Mode in Timer 2 allows either Comparator 0 or the SmaRTClock period to be measured
against the system clock or the system clock divided by 12. Comparator 0 and the SmaRTClock period can
also be compared against each other. Timer 2 Capture Mode is enabled by setting TF2CEN to 1. Timer 2
should be in 16-bit auto-reload mode when using Capture Mode.
T2MH
0
0
0
0
1
SmaRTClock / 8
Comparator 0
SYSCLK / 12
T2XCLK[1:0]
00
01
10
11
X
T2XCLK[1:0]
00
01
11
Figure 32.5. Timer 2 8-Bit Mode Block Diagram
SYSCLK / 12
SmaRTClock / 8
Reserved
Comparator 0
SYSCLK
SYSCLK
TMR2H Clock
Source
0
1
1
0
M
H
T
3
M
T
3
L
CKCON
M
T
2
H
M
T
2
L
M
T
1
M
T
0
TR2
S
C
A
1
C
S
A
0
Rev. 0.5
TCLK
TCLK
TMR2RLH
TMR2RLL
T2ML
TMR2H
TMR2L
0
0
0
0
1
Reload
Reload
T2XCLK[1:0]
00
01
10
11
X
To SMBus
To ADC,
TF2CEN
T2SPLIT
SMBus
TF2LEN
T2XCLK
TF2H
TF2L
TR2
C8051F96x
SYSCLK / 12
SmaRTClock / 8
Reserved
Comparator 0
SYSCLK
TMR2L Clock
Source
Interrupt
455
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