ATAM862P-TNSY4D Atmel, ATAM862P-TNSY4D Datasheet - Page 27

• Manufacturer Part Number: ATAM862P-TNSY4D
• Description: IC MCU FLASH 4K TX 433MHZ 24SSOP
• Manufacturer: Atmel

Specifications of ATAM862P-TNSY4D

• 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

Figure 19-1. Clock Module
19.2
19.2.1
4551G–4BMCU–07/07
Oscillator Circuits and External Clock Input Stage
OSC1
OSC2
RC-oscillator 1 Fully Integrated
*
*
*
Configurable
Oscout
Oscin
t
Ext. clock
RC oscillator2
R
4-MHz oscillator
32-kHz oscillator
Oscout
Oscout
ExIn
Oscin
Oscin
In this state an interrupt can wake up the controller with the RC-oscillator, and the external oscil-
lator can be activated and selected by software. A synchronization stage avoids too short clock
periods if the clock source or the clock speed is changed.
If an external input clock is selected, a supervisor circuit monitors the external input and gener-
ates a hardware reset if the external clock source fails or drops below 500 kHz for more than 1
ms.
Trim
Table 19-1.
The clock module generates two output clocks. One is the system clock (SYSCL) and the other
the periphery (SUBCL). The SYSCL can supply the core and the peripherals and the SUBCL
can supply only the peripherals with clocks. The modes for clock sources are programmable
with the OS1 bit and OS0 bit in the SC register and the CCS bit in the CM register.
The microcontroller block series consists of four different internal oscillators: two RC-oscillators,
one 4-MHz crystal oscillator, one 32-kHz crystal oscillator and one external clock input stage.
For timing insensitive applications, it is possible to use the fully integrated RC oscillator 1. It
operates without any external components and saves additional costs. The RC-oscillator 1 cen-
SC:
Mode
1
2
3
4
BOT
RCOut2
OS1
ExOut
32Out
1
0
1
0
4Out
- - -
Stop
Stop
Stop
Clock Modes
OS1
OS0
1
1
0
0
OS0
Stop
Osc-
Stop
oscillator 1
RC-oscillator 1 (internal)
RC-oscillator 1 (internal)
RC-oscillator 1 (internal)
RC-oscillator 1 (internal)
RC
CM:
RCOut1
Control
NSTOP
CCS = 1
IN1
IN2
Sleep
WDL
Clock Source for SYSCL
CCS
Cin
CSS1
/2
CSS0
External input clock
RC-oscillator 2 with
/2
external trimming
32-kHz oscillator
4-MHz oscillator
Divider
CCS = 0
resistor
/2
Cin/16
/2
32 kHz
ATAM862-4
Clock Source
for SUBCL
SYSCL
SUBCL
32 kHz
C
C
C
in
in
in
/16
/16
/16
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