HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 582

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

18.4.5 Input/Output Pins
Flash memory is controlled by the pins listed in table 18-9.
Table 18-9 Flash Memory Pins
Pin Name
Programming power
Mode 2
Mode 1
Mode 0
Transmit data
Receive data
The transmit data and receive data pins are used in boot mode.
18.4.6 Register Configuration
The flash memory is controlled by the registers listed in table 18-10.
Table 18-10 Flash Memory Registers
Address
H'FF40
H'FF42
H'FF43
H'FF48
Notes: 1. The initial value is H'00 in modes 5, 6, and 7 (on-chip flash memory enabled).
2. In modes 1, 2, 3, and 4 (on-chip flash memory disabled), this register cannot be
modified and is always read as H'FF.
Name
Flash memory control
register
Erase block register 1
Erase block register 2
RAM control register
Abbreviation
V
MD
MD
MD
TXD
RXD
PP
2
1
0
1
1
Abbreviation
FLMCR
EBR1
EBR2
RAMCR
Input/Output
Power supply
Input
Input
Input
Output
Input
573
R/W
R/W
R/W
R/W
R/W
Function
Apply 12.0 V
H8/3048F operating mode
programming
H8/3048F operating mode
programming
H8/3048F operating mode
programming
Serial transmit data output
Serial receive data input
*2
*2
*2
Initial Value
H'00
H'00
H'00
H'70
*1
*1
*1