MITSUBISHI MICROCOMPUTERS
M37274EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Table 2. Relation Between Low-order 6-bit Data and High-level
Area Increase Interval
Low-order 6 bits of Data
0 0 0 0 0L0SB
Area Longer by τ Than That of Other t
m (m = 0 to 63)
Nothing
0 0 0 0 0 1 m = 32
0 0 0 0 1 0 m = 16, 48
0 0 0 1 0 0 m = 8, 24, 40, 56
0 0 1 0 0 0 m = 4, 12, 20, 28, 36, 44, 52, 60
0 1 0 0 0 0 m = 2, 6, 10, 14, 18, 22, 26, 30, 34, 38, 42, 46, 50, 54, 58, 62
1 0 0 0 0 0 m = 1, 3, 5, 7, ................................. 57, 59, 61, 63
Data bus
DA-H register
(Address : 024016
)
b7
b0
DA-L register (Note)
(Address : 024116
)
DA latch
(14 bits)
MSB
LSB
6
8
14
6
P0
3
PN2
D0
3
14-bit PWM circuit
D-A
PN1
PWM timing
generating
circuit
XIN
1/2
PN0
PWM0 register
(Address 020016
)
b7
b0
8
PWM0
PWM1
POL
D0
4
5
P0
4
8-bit PWM circuit
PW0
P0
D0
D0
D0
D0
5
PW1
P0
PW2
P0
PW3
P0
PW4
P0
PW5
P0
PW6
PWM1 register (Address 020116
PWM2 register (Address 020216
PWM3 register (Address 020316
PWM4 register (Address 020416
PWM5 register (Address 020516
PWM6 register (Address 020616
)
)
)
)
)
)
6
7
0
PWM2
PWM3
PWM4
PWM5
PWM6
6
7
0
D0
D0
1
2
1
2
Selection gate :
Connected to
black side at
reset.
PN : PWM mode register 1 (address 020A16
PW: PWM mode register 2 (address 020B16
)
)
P0 : Port P0 register (address 00C016
D0 : Port P0 direction register (address 00C116
)
Inside of
is as same contents with the others.
)
Fig. 22. PWM Block Diagram
29
RENESAS [ RENESAS TECHNOLOGY CORP ]
