HD6432345 Datasheet, PDF (570/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

17.6.4 Pin Configuration
The flash memory is controlled by means of the pins shown in table 17.10.
Table 17.10 Flash Memory Pins
Pin Name
Abbreviation I/O
Function
Reset
RES
Input Reset
Flash write enable
FWE*
Input Flash program/erase protection by hardware
Mode 2
Mode 1
Mode 0
Port F₂
Port F₁
Port F₀
Transmit data
MD₂
MD₁
MD₀
PF₂
PF₁
PF₀
TxD1
Input
Input
Input
Input
Input
Input
Output
Sets MCU operating mode
Sets MCU operating mode
Sets MCU operating mode
Sets MCU operating mode in writer mode
Sets MCU operating mode in writer mode
Sets MCU operating mode in writer mode
Serial transmit data output
Receive data
RxD1
Input Serial receive data input
Note: * FWE pin functions as WDTOVF pin on ZTAT, mask ROM, and ROMless versions.
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