Toshiba H1 Series - Manual (Page 53)

TMP92CZ26A
92CZ26A-50
3.4.4 Downloading a User Program via UART
(1) Connection example
Figure 3.4.4 shows an example of connections for downloading a user program via
UART (using a 16-bit NOR Flash memory device as program memory).
Note: When USB is not used, add a pull-up or pull-down resistor to the D+ and D- pins to prevent flow-through
current.
Figure 3.4.4 UART Connection Example
(2) UART interface specifications
SIO channel 0 is used for downloading a user program.
The UART communication format in BOOT mode is shown below. Before booting, the
PC must also be set up with the same conditions.
Although the default baud rate is 9600 bps, this can be changed as shown in Table
3.4.8.
Serial transfer mode: : UART (asynchronous) mode, full-duplex
Data length : 8 bits
Parity bit : None
STOP bit : 1 bit
Handshake : None
Baud rate (default) : 9600 bps
PC
TXD0 P90 (OUT) D+ D-
RXD0, P91 (IN) P82, 2 CS
P70, RD
PJ2, SRWR
AM0
D0 to D15
AM1
A1 to 20
TMP92CZ26A
CE
OE
WE
D0 toD15
A0 toA19
NOR
Flash Memory
Level
Shifter
RTS
RXD
TXD
UART 3 pins