ATAM862P-TNSY8D Atmel, ATAM862P-TNSY8D Datasheet - Page 30
ATAM862P-TNSY8D
Manufacturer Part Number
ATAM862P-TNSY8D
Description
IC MCU FLASH 4K TX 868MHZ 24SSOP
Manufacturer
Atmel
Datasheet
1.ATAM862P-TNQY8D.pdf
(110 pages)
Specifications of ATAM862P-TNSY8D
Applications
UHF ASK/FSK
Core Processor
MARC4
Program Memory Type
FLASH (4 kB)
Controller Series
MARC4 4-Bit
Ram Size
256 x 4
Interface
SSI
Number Of I /o
11
Voltage - Supply
1.8 V ~ 4 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
24-SSOP
Processor Series
ATAM862x
Core
MARC4
Data Bus Width
4 bit
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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19.3
19.3.1
30
Clock Management
ATAM862-8
Clock Management Register (CM)
Figure 19-7. 32-kHz Crystal Oscillator
Note:
The clock management register controls the system clock divider and synchronization stage.
Writing to this register triggers the synchronization cycle.
Table 19-3.
CM:
NSTOP
CCS
CSS1
CSS0
Both, the 4-MHz and the 32-kHz crystal oscillator, use an integrated 14 stage divider circuit to sta-
bilize oscillation before the oscillator output is used as system clock. This results in an additional
delay of about 4 ms for the 4-MHz crystal and about 500 ms for the 32-kHz crystal.
CSS1
0
1
1
0
Not STOP peripheral clock
NSTOP = 0, stops the peripheral clock while the core is in SLEEP mode
NSTOP = 1, enables the peripheral clock while the core is in SLEEP mode
Core Clock Select
CCS = 1, the internal RC-oscillator 1 generates SYSCL
CCS = 0, the 4-MHz crystal oscillator, the 32-kHz crystal oscillator, an external
clock source or the internal RC-oscillator 2 with the external resistor at OSC1
generates SYSCL dependent on the setting of OS0 and OS1 in the system
configuration register
Core Speed Select 1
Core Speed Select 0
Core Speed Select
NSTOP
Bit 3
Configurable
*
32 kHz
XTAL
OSC1
OSC2
CCS
Bit 2
CSS0
0
1
0
1
Table 2:
C1
C2
*
*
CSS1
Bit 1
Oscin
Oscout
oscillator
32-kHz
32Out
CSS0
Bit 0
Auxiliary register address: "3"hex
Divider
16
8
4
2
32Out
Reset value: 1111b
Reset value
4590G–4BMCU–06/07
Note
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