HD64F2636F20J Renesas Electronics America, HD64F2636F20J Datasheet - Page 790
![IC H8S MCU FLASH 128K 128QFP](/photos/28/61/286109/128-bfqfp_sml.jpg)
HD64F2636F20J
Manufacturer Part Number
HD64F2636F20J
Description
IC H8S MCU FLASH 128K 128QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2636F20J
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
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K 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
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F2636F20J
Manufacturer:
HIT
Quantity:
86
Company:
Part Number:
HD64F2636F20J
Manufacturer:
Renesas Electronics America
Quantity:
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Section 20 RAM
20.2
20.2.1
The on-chip RAM is enabled or disabled by the RAME bit in SYSCR. For details of other bits in
SYSCR, see section 3.2.2, System Control Register (SYSCR).
Bit 0—RAM Enable (RAME): Enables or disables the on-chip RAM. The RAME bit is
initialized when the reset state is released. It is not initialized in software standby mode.
Bit 0
RAME
0
1
20.3
When the RAME bit is set to 1, accesses to addresses H'FFE000 to H'FFEFBF (for the H8S/2636),
H'FFB000 to H'FFEFBF (for the H8S/2638, H8S/2639, and H8S/2630), H'FFD800 to H'FFEFBF
(for the H8S/2635 Group), or H'FFFFC0 to H'FFFFFF in the chip are directed to the on-chip
RAM. When the RAME bit is cleared to 0, the off-chip address space is accessed.
Since the on-chip RAM is connected to the CPU by an internal 16-bit data bus, it can be written to
and read in byte or word units. Each type of access can be performed in one state.
Even addresses use the upper 8 bits, and odd addresses use the lower 8 bits. Word data must start
at an even address.
Page 740 of 1458
Bit
Initial value
R/W
Register Descriptions
System Control Register (SYSCR)
Operation
Description
On-chip RAM is disabled
On-chip RAM is enabled
:
:
:
MACS
R/W
7
0
⎯
⎯
6
0
INTM1
R/W
5
0
INTM0
R/W
4
0
NMIEG
R/W
3
0
R/W
⎯
2
0
H8S/2639, H8S/2638, H8S/2636,
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
⎯
⎯
1
0
(Initial value)
RAME
May 28, 2010
R/W
0
1
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