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PDF R8A66170DD Data sheet ( Hoja de datos )
| Número de pieza | R8A66170DD | |
| Descripción | 4-CH 16-BIT PWM GENERATOR | |
| Fabricantes | Renesas Technology | |
| Logotipo |  |
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R8A66170DD/SP
4-CH 16-BIT PWM GENERATOR
REJ03F0272-0100
Rev. 1.00
Apr.01.2008
DESCRIPTION
R8A66170 is a programmable 4-channel PWM generator produced using the silicon gate CMOS process.
R8A66170 can connect directly to the MPU data bus, and consists of a 16-bit prescaler and a PWM counter.
The pulse output includes three kinds of modes, allowing the independent control of each channel.
R8A66170 provides a software servo system in combination with the A-D function and the timer function of a one-chip
microcomputer. R8A66170 is a succession product of M66240.
FEATURES
www.DataSheet•4U.c4o-mchannel individually controllable
• Built-in three kind of pulse output modes
• PWM repetitive frequency: 50 kHz (max.) (Mode 0, 8-bit resolution, fxin/255 at prescaler setting = 0)
• Output polarity selection possible
• External triggering possible
• The output after reset is in the high impedance state.
• Change of mode setting becomes effective after the current cycle.
• High output current : Io = ±24 mA (VCC = 5.0V)
• Wide operating power voltage range (VCC = 5.0V or 3.3V single power supply)
• Wide operating temperature range (Ta = -40~85 ºC)
APPLICATION
• Control of DC motors and stepping motors
• Control of Heater phase controllers
• Software servos for office automation equipment , and industrial equipment
PIN CONFIGURATION (TOP VIEW)
Data bus inputs
Write control input
Command/Data control input
Chip select input
D0
D1
D2
D3
D4
D5
D6
D7
WR
C/D
CS
GND
1
2
3
4
5
6
7
8
9
10
11
12
24 Vcc
23 PWM1 PWM output 1
22 TRG1 Trigger input 1
21 PWM2 PWM output 2
20 TRG2 Trigger input 2
19 PWM3 PWM output 3
18 TRG3 Trigger input 3
17 PWM4 PWM output 4
16 TRG4 Trigger input 4
15 RESET Reset input
14 X1 Clock input
13 X2 Clock output
REJ03F0272-0100 Rev.1.00 Apr.01.2008
Page 1 of 20
1 page  
R8A66170DD/SP
First byte
(Command 2)
D3 D2 D1
111
110
111
110
10
www.DataSheet4U.c1om 0
1
0
0X1
0X0
The second byte
Upper byte of
PWM H register
Lower byte of
PWM H register
Upper byte of
PWM H register
Lower byte of
PWM H register
Upper byte of
PWM L register
Lower byte of
PWM L register
Upper byte of
prescaler register
Lower byte of
prescaler register
The third byte
Lower byte of
PWM H register
-
Lower byte of
PWM H register
Upper byte of
PWM L register
Lower byte of
PWM L register
-
Lower byte of
prescaler register
-
Fig.2 Data-setting sequence for registers
The fourth byte The fifth byte
Remark
-
-
Upper byte of
PWM L register
Lower byte of
PWM L register
-
-
-
-
-
-
Lower byte of
PWM L register
-
-
-
-
-
In Mode 0 or 1
In Mode 2
Reset
C/D=1 Mode setting (command 1) D7 = 1
C/D=1
C/D=0
C/D=0
Prescaler setting
(upper byte)
(command 2)
Prescaler value
upper byte
Prescaler value
lower byte
D7, D4, D3 = 0
D1 = 1
C/D=1
PWM counter setting
(upper byte)
(command 2)
C/D=0
C/D=0
PWM counter
upper byte
PWM counter
lower byte
D7, D4 = 0
D3, D2, D1 = 1
No Setting
completed?
C/D=1
Yes
Output enable
(command 3)
Start
D7 = 0
D4 = 1
1
1
Change
setting?
No
Yes
D7, D4 = 0
C/D=1
Prescaler or PWM counter
setting change
D3 = 0 or 1
D2 = 1
(command 2)
D1 = 0 or 1
C/D=0 Upper byte of prescaler or
PWM counter
Lower byte of prescaler or
C/D=0
PWM counter
Yes
C/D=1
Change
setting?
No
Output disable
(command 3)
Yes Change
mode?
No
End
D7=0
D4=1
Fig.3 Flow chart in Mode 0 or 1 (for one channel)
REJ03F0272-0100 Rev.1.00 Apr.01.2008
Page 5 of 20
5 Page 
R8A66170DD/SP
16-bit
Prescaler
Register
www.DataSheet4U.com
88
H
16- and 8-bit
PWM counter
Inverting circuit
H register
8
Fig.9 Block diagram in Mode 0 (for one channel)
F/F Buffer
TRG
PWM
16-bit
Prescaler
Register
88
16-bit
PWM counter
H register
8
F/F Buffer
TRG
PWM
Fig.10 Block diagram in Mode 1 (for one channel)
16-bit
Prescaler
Register
88
H
16-bit
PWM counter
H register
L register
8
F/F Buffer
TRG
PWM
Fig.11 Block diagram in Mode 2 (for one channel)
REJ03F0272-0100 Rev.1.00 Apr.01.2008
Page 11 of 20
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet R8A66170DD.PDF ] | |
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