upd75212a Renesas Electronics Corporation., upd75212a Datasheet - Page 23

• Manufacturer Part Number: upd75212a
• Description: 4-bit Single-chip Microcomputer
• Manufacturer: Renesas Electronics Corporation.

5.7
via serial bus and coupling with peripheral devices.
The PD75212A serial interface has the following functions.
The above functions facilitate data communication with another microcomputer of PD7500 series and 78K series
Frequency Divider
f
Clocked 8-bit send/receive operation (simultaneous send/receive)
Clocked 8-bit serial bus operation (data input/output from the SO pin. N-ch open-drain SO output)
Start LSB/MSB switching
x
SERIAL INTERFACE
TPGM3
TPGM1
1/2
Fig. 5-6 Timer/Pulse Generator Block Diagram (PWM Pulse Generation Mode)
Modulo Register H (8)
MODH (8)
8
PWM Pulse Generator
Modulo Latch (14)
(IRQTPG Set Signal)
MODH
INTTPG
(
2
f
15
X
Internal Bus
Modulo Register L (6)
= 7.81 ms : at 4.19 MHz operation)
MODL
7-2
8
(6)
MODL
(2)
Selector
TPGM5
Output Buffer
TPGM7
PD75212A
PPO
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