ATAM862P-TNQY8D Atmel, ATAM862P-TNQY8D Datasheet - Page 28
![IC MCU FLASH 4K TX 868MHZ 24SSOP](/photos/6/76/67636/453-24-ssop_sml.jpg)
ATAM862P-TNQY8D
Manufacturer Part Number
ATAM862P-TNQY8D
Description
IC MCU FLASH 4K TX 868MHZ 24SSOP
Manufacturer
Atmel
Datasheet
1.ATAM862P-TNQY8D.pdf
(110 pages)
Specifications of ATAM862P-TNQY8D
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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19.2.2
19.2.3
28
ATAM862-8
External Input Clock
RC-oscillator 2 with External Trimming Resistor
Figure 19-2. RC-oscillator 1
The OSC1 or OSC2 (mask option) can be driven by an external clock source provided it meets
the specified duty cycle, rise and fall times and input levels. Additionally, the external clock stage
contains a supervisory circuit for the input clock. The supervisor function is controlled via the
OS1, OS0 bit in the SC register and the CCS bit in the CM register. If the external input clock is
missing for more than 1 ms and CCS = 0 is set in the CM register, the supervisory circuit gener-
ates a hardware reset.
Figure 19-3. External Input Clock
Table 19-2.
The RC-oscillator 2 is a high resolution trimmable oscillator whereby the oscillator frequency can
be trimmed with an external resistor between OSC1 and V
lator 2 frequency can be maintained stable with a tolerance of ±10% over the full operating
temperature and a voltage range V
For example:
An output frequency at the RC-oscillator 2 of 2 MHz can be obtained by connecting a resistor
R
ext
= 360 k (see
OS1
1
1
x
Supervisor Function Control Bits
Figure 19-4 on page
Clock
OS0
Clock
Ext.
Ext.
1
1
0
or
OSC1
OSC2
DD
from 2.5 V to 6.0 V.
oscillator 1
29).
Control
RC
Ext. input clock
CCS
ExIn
Clock monitor
RcOut1
0
1
x
Stop
ExOut
Stop
Osc-Stop
DD
RcOut1
Supervisor Reset Output (Res)
. In this configuration, the RC-oscil-
Osc-Stop
RcOut1
CCS
Res
Disable
Disable
Enable
4590G–4BMCU–06/07
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