Version 2.1
RA8906
8-Bit Micro-Controller
Overview
The RA8906 is an 8-bit downloadable micro-controller with 64K-byte embedded Flash ROM. It supports multiple
timer/counter sources, versatile interrupt-handling architecture and two built-in DAC’s (Digital-to-Analog
Converters). It provides a complete speech interface and 32K-bps ADPCM solution that make this chip an
excellent choice as the embedded micro-controller for educational game or toy speech products.
The built-in 4K-bytes ROM support the on-chip RAiO ICE Monitor program which controls the UART and
enables the RS232 connection between the RA8906 and a PC host. The RA8906 support the ISP(In-System
Programming) and ISD(In-System Debugging) functions. Users can download their programs as well as data
from a PC host to the embedded Flash ROM of RA8906.
RAiO also support a windows based ICE driver for customers to very easy programming & debugging their
program. Using RS232 connection between a speech toy to a PC host running RAiO’s download utility program,
toy makers are able to implement the Internet Game/Speech download features easily and give the toys multiple
attractive characteristics.
Feature
8-bit Micro Processor
64K-byte Embedded Flash ROM
80-byte User SRAM
Two 8-bit General Purpose I/O Ports
Three 12-bit Timers
Three Fixed Time-Bases (2KHz, 500Hz, 62Hz)
Two 8-bit Current Mode DACs
Support One Watch Dog Timer
Low Power Consumption at Sleep Mode
On-Chip ICE and ISP(In-System
Programming) Supporting Programs.
Support 32K bps ADPCM Solution
Operating Voltage: 4.5V ~ 6V
System Clock: 2/4/6MHz
Package/Die Form
RESET#
NC
MONITOR#
NC
BREAK#
NC
TXD
NC
RXD
NC
VDD
NC
XCLKI
XCLKQ
NC
GND
NC
VDD
NC
PT2_0
NC
PT2_1
NC
GND
AGND
DACO1
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
63
62
35
34
31
PT1_7
PT2_2
PT2_3
PT2_4
PT2_5
PT2_6
PT2_7
GND
GND
DAC02
VDD
DAC01
GND
PT2_1
PT2_0
VDD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
PT1_6
PT1_5
PT1_4
PT1_3
PT1_2
PT1_1
PT1_0
VDD
GND
RESET#
MONITOR#
TXD
RXD
VDD
XCLKI
XCLKQ
RAiO
TM
RA8906
02xx
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
GND
VDD
VDD
PT1_0
NC
PT1_1
NC
PT1_2
NC
PT1_3
NC
PT1_4
NC
PT1_5
NC
PT1_6
NC
PT1_7
NC
PT2_2
NC
PT2_3
NC
PT2_4
NC
PT2_5
NC
PT2_6
NC
PT2_7
NC
GND
32
LOGO
1
RAiO TECHNOLOGY INC.
2/7
2
www.raio.com.tw
33
AVDD
DACO2
AGND
GND
GND
RAIO [ RAIO TECHNOLOGY INC. ]
