Flash Memory Control Register 2 (Flmcr2) - Hitachi H8S/2199 Hardware Manual

Single-chip microcomputer

Table of Contents

Flash Memory Control Register 2 (FLMCR2)

Initial value

FLMCR2 is an 8-bit register used for flash memory operating control mode.

With addresses H'40000 to H'47FFF, program-verify mode and erase-verify mode is entered by

setting SWE2 when FWE (FLMCR1) = 1, then setting the EV2 bit and the PV2 bit. Program mode

is entered by setting SWE2 when FWE (FLMCR1) = 1, then setting the SWE2 bit and PSU2 bit,

and finally setting the P2 bit.

With addresses H'40000 to H'47FFF, erase mode is entered by setting SWE2 when FWE

(FLMCR1) = 1, then setting the ESU2 bit , and finally setting the E2 bit. FLMCR2 is initialized to

H'00 by a reset, in standby mode, when a low level is input to the FWE pin, and when a high level

is input to the FWE pin and the SWE2 bit in FLMCR2 is not set. FLER can be initialized only by

Writes to the SWE2 bit in the FLMCR2 are enabled only when FWE (FLMCR1) = 1; writes to the

ESU2, PSV2, EV2, and PV2 bits only when FWE (FLMCR1) = 1 and SWE2 = 1; writes to the E2

bit only when FWE (FLMCR1) = 1, SW2 = 1, and ESU2 = 1; writes to the P2 bit only when FWE

(FLMCR1) = 1, SWE2 = 1, and PSU2 = 1.

Bit 7    Flash Memory Error (FLER): Indicates that an error has occurred during an operation

on flash memory (programming or erasing). When FLER is set to 1, flash memory goes to the

error-protection state.

Flash memory is operating normally

Flash memory program/erase protection (error protection) is disabled

[Clearing condition]

Reset or hardware standby mode

An error has occurred during flash memory programming/erasing

Flash memory program/erase protection (error protection) is enabled

[Setting condition]

See section 7.6.3, Error Protection

Rev. 1.0, 02/00, page 134 of 1141

(Initial value)