ST72E121J4D0 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72E121J4D0

8-BIT MCU WITH 8 TO 16K OTP/EPROM, 384 TO 512 BYTES RAM, WDG, SCI, SPI AND 2 TIMERS

STMicroelectronics 

ST72E121 ST72T121

SERIAL PERIPHERAL INTERFACE (Cont’d)

Figure 36. Serial Peripheral Interface Block Diagram

MOSI

MISO

SCK

SS

Internal Bus

Read

DR

Read Buffer

8-Bit Shift Register

Write

MASTER

CONTROL

IT

request

SR

SPIF WCOL - MODF -

-

-

-

SPI

STATE

CONTROL

CR

SPIE SPE SPR2 MSTR CPOL CPHA SPR1 SPR0

SERIAL

CLOCK

GENERATOR

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