Section 24 ROM
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24.4
Input/Output Pins
The flash memory is controlled by means of the pins shown in table 24.2.
Table 24.2 Pin Configuration
Pin Name
I/O
Function
RES
Input
Reset
MD2
Input
Sets this LSI’s operating mode
MD1
Input
Sets this LSI’s operating mode
MD0
Input
Sets this LSI’s operating mode
FWE
Input
Flash memory pin
TxD1
Output
Serial transmit data output
RxD1
Input
Serial receive data input
24.5
Register Descriptions
The flash memory has the following registers. To access FLMCR1, FLMCR2, EBR1, or EBR2,
the FLSHE bit in the serial/timer control register (STCR) should be set to 1. For details on the
serial/timer control register, see section 3.2.3, Serial Timer Control Register (STCR).
•
Flash memory control register 1 (FLMCR1)
•
Flash memory control register 2 (FLMCR2)
•
Erase block register 1 (EBR1)
•
Erase block register 2 (EBR2)
24.5.1
Flash Memory Control Register 1 (FLMCR1)
FLMCR1, used together with FLMCR2, makes the flash memory transit to program mode,
program-verify mode, erase mode, or erase-verify mode. For details on register setting, see section
24.8, Flash Memory Programming/Erasing.
FLMCR1 is initialized to H'00 by a reset, or in hardware standby mode, software standby mode,
sub-active mode, sub-sleep mode, or watch mode.
Содержание H8S/2158
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