GMS84512 Datasheet, PDF (57/123 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCOMPUTER

GMS 84512 / 84524
3.6 Pulse Width Modulation ( PWM )
The GMS84512/84524 is equipped with one 14-bit PWM(PWM8) and eight 7-bit
PWM(PWM0~PWM7).
The 14-bit resolution gives PWM8 the minium resolution bit width of 500ns(PS2=500ns, if
Xin=4MHz) and repeat period of 8,192uS. Each PWM0~PWM7 has a 7-bit resolution with min.
resolution bit width of 8uS ( PS6 ) and repeat period of 1,024uS.
l PWM Specification Table
Specification
Resolution
Input Clock
1 Frame Cycle
14-bit PWM
14 bits
0.5uS
8,192uS
( @ Xin =4MHz )
7-bit PWM
7 bits
8uS
1,024uS
7
PWMR7 ¡ -PWMR0
- 6543210
5
PWMCR2
- - - 43210
Data BUS
8
PWMCR1
76543210
CNTB
PWMR7
PWMR6
PWMR5
PWMR4
PWMR3
PWMR2
PWMR1
EN7
EN6
EN5
EN4
EN3
EN2
EN1
PWM7
PWM6
PWM5
PWM4
PWM3
PWM2
PWM1
CNTB
PS6
PWMR0
7
7-bit Comparator
7
7-bit Counter
Match
T F/F
POL2
T2048E
FIG. 3.6.1 Block Diagram of 7-bit PWM & T2048
EN0
PWM0
T2048
IF 1mS
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