HD6432621 Hitachi, HD6432621 Datasheet - Page 666

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

19.2.6
The flash memory is divided into three 64-kbyte blocks, one 32-kbyte block, and eight 4-kbyte
blocks.
19.3
The flash memory is controlled by means of the pins shown in table 19-2.
Table 19-2 Pin Configuration
Pin Name
Reset
Flash write enable FWE
Mode 2
Mode 1
Mode 0
Port F0
Port 16
Port 14
Transmit data
Receive data
622
Block Configuration
Pin Configuration
Abbreviation I/O
RES
MD2
MD1
MD0
PF0
P16
P14
TxD2
RxD2
Address H'3FFFF
Address H'00000
Figure 19-5 Flash Memory Block Configuration
Input
Input
Input
Input
Input
Input
Input
Input
Output
Input
256 kbytes
Function
Reset
Flash memory program/erase protection by hardware
Sets MCU operating mode
Sets MCU operating mode
Sets MCU operating mode
Sets MCU operating mode in programmer mode
Sets MCU operating mode in programmer mode
Sets MCU operating mode in programmer mode
Serial transmit data output
Serial receive data input
4 kbytes
32 kbytes
64 kbytes
64 kbytes
64 kbytes
8