BD9202EFS 데이터 시트보기 (PDF) - ROHM Semiconductor
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BD9202EFS Datasheet PDF : 20 Pages
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BD9202EFS
Technical Note
Register map
Addres
s
R/W
00H R/W
01H R/W
02H R/W
03H R/W
04H R/W
05H R/W
06H R/W
07H R/W
08Ｈ R/W
09H R/W
0AH R/W
0BH R/W
0CH R/W
0DH R/W
0EH R/W
0FH R/W
10H R/W
11H R/W
Initial Register
value name
Bit7
Bit6
Bit5
Bit4
00h
PWMCNT
PWMRS
T
-
00h LEDEN LED8EN LED7EN
-
LED6EN
-
LED5EN
00h
SETPWM1 PWM
1
LED1[7]
PWM
LED1[6]
00h
SETPWM
12
-
-
00h
SETPWM
21
PWM
LED2[7]
PWM
LED2[6]
00h
SETPWM
22
-
-
00h
SETPWM
31
PWM
LED3[7]
PWM
LED3[6]
00h
SETPWM
32
-
-
00h
SETPWM
41
PWM
LED4[7]
PWM
LED4[6]
00h
SETPWM
42
-
-
00h
SETPWM
51
PWM
LED5[7]
PWM
LED5[6]
00h
SETPWM
52
-
-
00h
SETPWM
61
PWM
LED6[7]
PWM
LED6[6]
00h
SETPWM
62
-
-
00h
SETPWM
71
PWM
LED7[7]
PWM
LED7[6]
00h
SETPWM
72
-
-
00h
SETPWM
81
PWM
LED8[7]
PWM
LED8[6]
00h
SETPWM
82
-
-
PWM
LED1[5]
-
PWM
LED2[5]
-
PWM
LED3[5]
-
PWM
LED4[5]
-
PWM
LED5[5]
-
PWM
LED6[5]
-
PWM
LED7[5]
-
PWM
LED8[5]
-
PWM
LED1[4]
-
PWM
LED2[4]
-
PWM
LED3[4]
-
PWM
LED4[4]
-
PWM
LED5[4]
-
PWM
LED6[4]
-
PWM
LED7[4]
-
PWM
LED8[4]
-
All registers are reset by each condition below.
①UVLO(VREG)＜2.9V(typ.)
②UVLO(EXT)＜1.9V(typ.)
③Thermal shutdown detection (Tj＞175℃)
④Register PWMRST=1( exclude PWMRST itself)
Bit3
-
LED4EN
PWM
LED1[3]
-
PWM
LED2[3]
-
PWM
LED3[3]
-
PWM
LED4[3]
-
PWM
LED5[3]
-
PWM
LED6[3]
-
PWM
LED7[3]
-
PWM
LED8[3]
-
Bit2
-
LED3EN
PWM
LED1[2]
-
PWM
LED2[2]
-
PWM
LED3[2]
-
PWM
LED4[2]
-
PWM
LED5[2]
-
PWM
LED6[2]
-
PWM
LED7[2]
-
PWM
LED8[2]
-
Bit1
Bitφ
PARADRV PWMEN
LED2EN
PWM
LED1[1]
PWM
LED1[9]
PWM
LED2[1]
PWM
LED2[9]
PWM
LED3[1]
PWM
LED3[9]
PWM
LED4[1]
PWM
LED4[9]
PWM
LED5[1]
PWM
LED5[9]
PWM
LED6[1]
PWM
LED6[9]
PWM
LED7[1]
PWM
LED7[9]
PWM
LED8[1]
PWM
LED8[9]
LED1EN
PWM
LED1[0]
PWM
LED1[8]
PWM
LED2[0]
PWM
LED2[8]
PWM
LED3[0]
PWM
LED3[8]
PWM
LED4[0]
PWM
LED4[8]
PWM
LED5[0]
PWM
LED5[8]
PWM
LED6[0]
PWM
LED6[8]
PWM
LED7[0]
PWM
LED7[8]
PWM
LED8[0]
PWM
LED8[8]
Function
PWM control register
LED ON/OFF Control register
Register 1 for setting LED1 PWM
( Subordinate bit setting)
Register 2 for setting LED1 PWM
(Superior bit setting)
Register 1 for setting LED2 PWM
(Subordinate bit setting)
Register 2 for setting LED2 PWM
(Superior bit setting)
Register 1 for setting LED3 PWM
(Subordinate bit setting)
Register 2 for setting LED3 PWM
(Superior bit setting)
Register 1 for setting LED4 PWM
(Subordinate bit setting)
Register 2 for setting LED4 PWM
(Superior bit setting)
Register 1 for setting LED5 PWM
(Subordinate bit setting)
Register 2 for setting LED5 PWM
(Superior bit setting)
Register 1 for setting LED6 PWM
(Subordinate bit setting)
Register 2 for setting LED6 PWM
(Superior bit setting)
Register 1 for setting LED7 PWM
(Subordinate bit setting)
Register 2 for setting LED7 PWM
(Superior bit setting)
Register 1 for setting LED8 PWM
(Subordinate bit setting)
Register 2 for setting LED8 PWM
(Superior bit setting)
●ADDR=00h
PWMCNT(PWM Control register : Read/Write)
Bit
Register
name
7
PWMRST
6
not_used
5
not_used
Initial value
0
0
0
4
not_used
0
3
not_used
0
2
not_used
0
1
PARADRV
0
0
PWMEN
0
PWMEN
0
1
PWM mode control
disable (Default)
PWM mode enable
PARADRV
0
1
LED output control
To control LED1-LED8 independently
To control LED1and 2, LED3 and 4, LED5 and 6, LED7
and 8 simultaneously
PWMRST
PWM logic reset control
0
Normal Function (Default)
1
Logic reset
When it makes PWMRST = ' 1 ', PWM Logic and all registers (the PWMRST register is excluded) is reset.
To make normal operation, it is necessary to reset if make PWMRST= ' 0 '.
When it makes PARADRV= ' 1 ', because LED1 and LED2 (LED3 and LED4, LED5 andLED6, LED7 and LED8) operate
synchronously (following the setting of LED of odd number turn), when you use the output of LED1 and LED2 (LED3and LED4,
LED5 and LED6, LED7 and LED8) by short-circuiting, it operates as each heavy-current driver of ILEDMAX=300mA.
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8/19
2009.04 - Rev.A
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