HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 807
HD64F2638F20J
Manufacturer Part Number
HD64F2638F20J
Description
IC H8S MCU FLASH 256K 128-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2638F20J
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI, SmartCard
Peripherals
Motor Control PWM, POR, PWM, WDT
Number Of I /o
72
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
128-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Manufacturer
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H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
21A.7 Register Descriptions
21A.7.1 Flash Memory Control Register 1 (FLMCR1)
FLMCR1 is an 8-bit register used for flash memory operating mode control. Program-verify mode
or erase-verify mode for on-chip flash memory is entered by setting SWE bit to 1 when FWE = 1,
then setting the PV or EV bit. Program mode for on-chip flash memory is entered by setting SWE
bit to 1 when FWE = 1, then setting the PSU bit, and finally setting the P bit. Erase mode for on-
chip flash memory is entered by setting SWE bit to 1 when FWE = 1, then setting the ESU bit, and
finally setting the E bit. FLMCR1 is initialized by a reset, and in hardware standby mode and
software standby mode. Its initial value is H'80 when a high level is input to the FWE pin, and
H'00 when a low level is input. When on-chip flash memory is disabled, a read will return H'00,
and writes are invalid.
Writes are enabled only in the following cases: Writes to bit SWE of FLMCR1 enabled when
FWE = 1, to bits ESU, PSU, EV, and PV when FWE = 1 and SWE = 1, to bit E when FWE = 1,
SWE = 1 and ESU = 1, and to bit P when FWE = 1, SWE = 1, and PSU = 1.
Note: * Determined by the state of the FWE pin.
Bit 7—Flash Write Enable Bit (FWE): Sets hardware protection against flash memory
programming/erasing.
Bit 7: FWE
0
1
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Initial value:
R/W:
Description
When a low level is input to the FWE pin (hardware-protected state)
When a high level is input to the FWE pin
Bit:
FWE
— *
R
7
SWE
R/W
6
0
ESU
R/W
5
0
PSU
R/W
4
0
R/W
EV
3
0
R/W
PV
2
0
R/W
E
1
0
Section 21A ROM
(H8S/2636 Group)
Page 757 of 1458
R/W
P
0
0
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