TMP86C909XB Toshiba, TMP86C909XB Datasheet - Page 128
TMP86C909XB
Manufacturer Part Number
TMP86C909XB
Description
EMULATION CHIP FOR TMP86F SDIP
Manufacturer
Toshiba
Datasheet
1.TMP86C909XB.pdf
(201 pages)
Specifications of TMP86C909XB
Accessory Type
Adapter
For Use With/related Products
TMP86F SDIP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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11.4 SEI Pin Functions
11.4.1 SCLK pin
11.4.2 MISO/MOSI pins
11.4.3
depends on the SEI device’s mode (master or slave).
The SCLK pin, MOSI pin and MISO pin of all SEI devices are connected with the same name pin to each other .
The TMP86F409NG have four input/output pins associated with SEI transfer. The functionality of each pin
slave.
starts transfer, eight serial clock pulses are output from the SCLK pin only during transfer.
from the master.
able.
is sampled at the opposite edge where the data is stable. The active edge is determined by SEI transfer proto-
cols.
ter and slave are shown in the table below.
ister (In case P0 Port, Input/output Control Register is P0OUTCR).
enabled). To set the MISO pin of an inactive slave device to a high-impedance state, clear the SECR<SEE> bit
to 0.
high, the slave device ignores the serial clock from the master. Nor does it receive data from the MISO pin.
When the slave’s
SS
The SCLK pin functions as an output pin when SEI is set for master, or as an input pin when SEI is set for
When SEI is set for master, serial clock is output from the SCLK pin to external devices. After the master
When SEI is set for slave, the SCLK pin functions as an input pin.
During data transfer between master and slave, device operation is synchronized by the serial clock output
When the
For both master and slave devices, data is shifted in and out at a rising or falling edge of the serial clock, and
Note:Noise in a slave device’s SCLK input may cause the device to operate erratically.
The MISO and MOSI pins are used for serial data transmission/reception. The status of each pin during mas-
Also, the SCLK, MOSI, and MISO pins can be set for open-drain by the each pin’s input/output control reg-
The MISO pin of a slave device becomes an output when the SECR<SEE> bit is set to 1 (SEI operation
The
When the SEI is a slave, this pin is used to enable the SEI transmission/reception. When the slave’s
pin
SS
pin function differently when the SEI is the master and when it is a slave.
Table 11-3 MISO/MOSI Pin Status
SS
pin of the slave device is “H”, data is not taken in regardless of whether the serial clock is avail-
SS
pin is L, the SEI operates as slave.
Master
Slave
Page 117
Output
MISO
Input
Output
MOSI
Input
TMP86F409NG
SS
pin is
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