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PDF TMP86FM48 Data sheet ( Hoja de datos )
| Número de pieza | TMP86FM48 | |
| Descripción | 8-Bit Microcontroller | |
| Fabricantes | Toshiba Semiconductor | |
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8 Bit Microcontroller
TLCS-870/C Series
TMP86FM48
1 page  
Pin Assignments (Top view)
www.DataSheet4U.com
LQFP64-P-1010-0.50E
QFP64-P-1414-0.80C
P80 49
P81 50
P82 51
P83 52
P84 53
P85 54
P86 55
P87 56
P30 57
P31 58
P32 59
P33 60
P34 61
P35 62
P36 63
P37 64
TMP86FM48
32 AVDD
31 VAREF
30 AVSS/VASS
29 BOOT
28 P52
27 P51 ( DVO /SDA)
26 P50 ( PPG /SCL)
25 P07 ( SCK1 )
24 P06 (SO1/TXD)
23 P05 (SI1/RXD)
22 P04
21 P03 (TC2)
20 P02 (INT2)
19 P01 (INT1)
18 P00 ( INT0 )
17 P17
86FM48-3
2007-08-24
5 Page 
TMP86FM48
1.4 System Clock Controller
www.DataSheeTt4hUe.cosmystem clock controller consists of a clock generator, a timing generator, and a standby
controller.
Timing generator control register
XIN
XOUT
XTIN
XTOUT
Clock generator
High-frequency
clock oscillator
fc
Low-frequency
clock oscillator
fs
TBTCR
0036H
Timing
generator
Standby controller
System clocks
Clock generator control
0038H
0039H
SYSCR1
SYSCR2
System control registers
1.4.1
Figure 1.4.1 System Clock Control
Clock Generator
The clock generator generates the basic clock which provides the system clocks supplied
to the CPU core and peripheral hardware. It contains two oscillation circuits: one for the
high-frequency clock and one for the low-frequency clock. Power consumption can be
reduced by switching of the standby controller to low-power operation based on the
low-frequency clock.
The high-frequency (fc) and low-frequency (fs) clocks can easily be obtained by connecting
a resonator between the XIN/XOUT and XTIN/XTOUT pins respectively. Clock input from
an external oscillator is also possible. In this case, external clock is applied to XIN/XTIN
pin with XOUT/XTOUT pin not connected.
High-frequency clock
XIN XOUT
XIN
XOUT
XTIN
Low-frequency clock
XTOUT
XTIN
XTOUT
(Open)
(Open)
(a) Crystal/Ceramic resonator (b) External oscillator
(c) Crystal
(d) External oscillator
Figure 1.4.2 Examples of Resonator Connection
Note:
The function to monitor the basic clock directly at external is not provided for hardware,
however, with disabling all interrupts and watchdog timers, the oscillation frequency can
be adjusted by monitoring the pulse which the fixed frequency is outputted to the port by
the program.
The system to require the adjustment of the oscillation frequency should create the
program for the adjustment in advance.
86FM48-9
2007-08-24
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TMP86FM48.PDF ] | |
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