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UPD75218 Datasheet(PDF) 21 Page - NEC

Part # UPD75218
Description  4-BIT SINGLE-CHIP MICROCOMPUTER
PDF  62 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD75218 Datasheet(HTML) 21 Page - NEC

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21
µPD75218
Fig. 5-6 Timer/Pulse Generator Block Diagram (PWM Pulse Generation Mode)
Note
7.81 ms when the microcomputer operates at 4.19 MHz.
5.7
SERIAL INTERFACE
The serial interface has the following functions:
• Clock synchronous 8-bit send/receive operation (simultaneous send/receive)
• Clock synchronous 8-bit serial bus operation (data input/output from the SO pin. N-ch open-drain SO output)
• Start LSB/MSB switching
These functions facilitate data communication with another microcomputer of
µPD7500 series or 78K series via
a serial bus and coupling with peripheral devices.
fX
TPGM1
TPGM3
88
MODH
MODL
MODH (8)
PPO
TPGM5
TPGM7
INTTPG
1/2
MODL7-2 (6)
Internal bus
Modulo register H (8)
Modulo register L (8)
Frequency divider
Modulo latch (14)
PWM pulse generator
Selector
Output buffer
(IRQTPG set signal)
(2)
(
= 5.46 ms : when fX is 6.0 MHz)Note
215
fX



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