M37221M6_03 Datasheet, PDF (28/62 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS
M37221M6-XXXSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
Table 6. Relation between the low-order 6-bit data and high-level
area increase interval
Low-order 6 bits of data Area longer by τ than that of other tm (m = 0 to 63)
LSB
000000
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 : 00CE16)
b7
b0
DA latch
(14 bits)
MSB
DA-L register (Note)
(Address : 00CF16)
LSB
8
14
6
6
PN2
PN4
DA
14-bit PWM circuit
D-A
PW1
XIN 1/2
PW0
PWM timing
generating
circuit
PWM register
(Address : 00D016)
b7
b0
Selection gate :
Connected to
black colored
side when reset.
Pass gate
Inside of
with the others.
is as same contents
PW : PWM output control register 1
PN : PWM output control register 2
D0 : Port P0 direction register
8
8-bit PWM circuit
PWM1 register (Address : 00D116)
PWM2 register (Address : 00D216)
PWM3 register (Address : 00D316)
PWM4 register (Address : 00D416)
PWM5 register (Address : 00F616)
PN3
P00
D00
PW2
P 01
D01
PW3
P02
D02
PW4
P03
D03
PW5
P04
D04
PW6
P05
D05
PW7
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5
Note: The DA-L register also functions as the low-order 6 bits of the DA latch.
Fig. 23. PWM block diagram
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