TMP88CH40NG Datasheet, PDF (119/148 Pages) Toshiba Semiconductor – 8 Bit Microcontroller

TMP88CH40NG
13. Synchronous Serial Interface (SIO)
The TMP88CH40NG has a clocked-synchronous 8-bit serial interface. Serial interface has an 8-byte transmit and
receive data buffer that can automatically and continuously transfer up to 64 bits of data.
Serial interface is connected to outside peripherl devices via SO, SI, SCK port.
This SIO and UART can not use simultaneously because their input/output ports are common.
13.1 Configuration
SIO control / status register
SIOSR
SIOCR1
SIOCR2
CPU
Control circuit
Buffer control
circuit
Shift
clock
Shift register
7 65 4
8-bit transfer
Transmit and
receive data buffer
(8 bytes in DBR)
3 21 0
4-bit transfer
INTSIO interrupt request
Serial clock
Figure 13-1 Serial Interface
SO
Serial data output
SI
Serial data input
SCK
Serial clock I/O
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