Renesas Hitachi H8S/2191, Hardware Manual

Page: 207 / 1065

Rev. 2.0, 11/00, page 180 of 1037
Bit 6: Software Write Enable (SWE)
Enables or disables flash memory programming. SWE should be set before setting bits 5 to 0,
bits 5 to 0 in FLMCR2, bits 5 to 0 in EBR1 and bits 7 to 0 in EBR2.
Bit 6
SWE Description
0 Writes are disabled (Initial value)
1 Writes are enabled
[Setting condition] Setting is available when FWE = 1 is selected
Bit 5: Erase-Setup Bit 1 (ESU1)
Prepares erase-mode transition for addresses H'00000 to H'1FFFF. Set ESU1 to 1 before setting
the E1 bit to 1. Do not set the SWE, PSU1, EV1, PV1, E1, or P1 bit at the same time.
Bit 5
ESU1 Description
0 Erase-setup cleared (Initial value)
1 Erase-setup
[Setting condition] When FWE = 1 and SWE = 1
Bit 4: Program-Setup Bit 1 (PSU1)
Prepares erase-mode transition for addresses H'00000 to H'1FFFF. Set PSU1 to 1 before setting
the P1 bit to 1. Do not set the SWE, ESU1, EV1, PV1, E1, or P1 bit at the same time.
Bit 4
PSU1 Description
0 Program-setup cleared (Initial value)
1 Program-setup
[Setting condition] When FWE = 1 and SWE = 1
Bit 3: Erase-Verify (EV1)
Selects erase-verify mode transition or clearing. Do not set the SWE, ESU1, PSU1, PV1, E1, or
P1 bit at the same time.
Bit 3
EV1 Description
0 Erase-verify mode cleared (Initial value)
1 Transition to erase-verify mode
[Setting condition] Setting is available when FWE = 1 and SWE = 1 are selected