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參數(shù)資料
| 型號： | ATAR890 |
| 廠商： | Atmel Corp. |
| 英文描述： | Low-current Microcontroller for Wireless Communication |
| 中文描述： | 低電流的無線通信控制器 |
| 文件頁數(shù)： | 1/75頁 |
| 文件大小： | 738K |
| 代理商： | ATAR890 |
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Rev. 4696C–4BMCU–02/04
Features
2-Kbyte ROM, 256
×
4-bit RAM
12 Bi-directional I/Os
Up to 6 External/Internal Interrupt Sources
Multifunction Timer/Counter with
– IR Remote Control Carrier Generator
– Bi-phase-, Manchester- and Pulse-width Modulator and Demodulator
Programmable System Clock with Prescaler and Five Different Clock Sources
Wide Supply-voltage Range (1.8 V to 6.5 V)
Very Low Sleep Current (< 1 μA)
32
×
16-bit EEPROM (ATAR890 only)
Synchronous Serial Interface (2-wire, 3-wire)
Watchdog, POR and Brown-out Function
Voltage Monitoring Inclusive Lo_BAT Detection
Flash Controller ATAM893 Available (SSO20)
Description
The ATAR090 and ATAR890 are members of Atmel’s family of 4-bit single-chip micro-
controllers. They offer the highest integration for IR and RF data communication and
remote-control. The ATAR090 and ATAR890 are suitable for the transmitter side. They
contain ROM, RAM, parallel I/O ports, two 8-bit programmable multifunction
timer/counters with modulator and demodulator function, voltage supervisor, interval
timer with watchdog function and a sophisticated on-chip clock generation with exter-
nal clock input, integrated RC-, 32-kHz crystal- and 4-MHz crystal-oscillators. The
ATAR890 has an additional EEPROM as a second chip in one package.
Figure 1.
Block Diagram
Voltage monitor
External input
MARC4
UTCM
OSC1
I/O bus
ROM
2 K x 8 bit
RAM
256 x 4 bit
4-bit CPU core
V
DD
V
SS
Data direction +
alternate function
Data direction +
interrupt control
Port 4
Port 5
Brown-out protect
RESET
Clock management
Timer 1
interval- and
watchdog timer
Timer 2
8/12-bit timer
Serial interface
P
D
T2O
SD
SC
BP20/NTE
BP21
BP22
BP23
BP40
INT3
SCBP41
VMI
T2I
BP42
T2O
BP43
INT3
SD
BP50
INT6
BP51
INT6
BP52
INT1
BP53
INT1
RC
oscillators
Crystal
oscillators
VMI
with modulator
SSI
External
clock input
T2I
OSC2
Low-current
Microcontroller
for Wireless
Communication
ATAR090
ATAR890
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