µ
PD75512
26
Internal bus
Modulo register H (8)
MODL
MODH
Modulo register L (8)
TPGM3
TPGM1
f
x
1/2
Frequency divider
MODH(8)
MODL (6)
7-2
Modulo latch (14)
PWM pulse generator
IRQTPG set signal
( = 7.8 ms: f at 4.19MHz)
x
2
15
f
x
INTTPG
TPGM5
TPGM7
Selector
Output buffer
PPO
Fig. 6-7 Timer/Pulse Generator Block Diagram (PWM Pulse Generation Mode)
6.8 SERIAL INTERFACE
The
µ
PD75512 is provided with two serial interface channels. Table 4-8 indicates differences between channel
0 and channel 1.
Table 6-2 Differences Between Channel 0 and Channel 1
Serial Transfer Mode, Funciton
Channel 0
Channel 1
Clock Selection
f
X
/2
4
, f
X
/2
3
, TOUT F/F, external clock
f
X
/2
4
, f
X
/2
3
external clock
3-Line
Transfer Method
MSB first/LSB first selectable
MSB first
Serial I/O
Transfer Completion
Serial transfer completion interrupt
Serial transfer completion flag (EOT)
Flag
request flag (IRQCSI0)
2-Line Serial I/O
Usable
Unprovided
Serial Bus Interface (SBI)
(1)
Serial interface function (Channel 0)
The
µ
PD75512 is equipped with the following four modes:
• Operation stop mode
• Three-line serial I/O mode
• Two-line serial I/O mode
• SBI mode (serial bus interface mode)
Содержание mPD75512
Страница 66: ...µPD75512 66 APPENDIX B RELATED DOCUMENTS ...