M30845FJGP#U3 Renesas Electronics America, M30845FJGP#U3 Datasheet - Page 87

IC M32C MCU FLASH 512K 144LQFP

M30845FJGP#U3

Manufacturer Part Number
M30845FJGP#U3
Description
IC M32C MCU FLASH 512K 144LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M32C/80r
Datasheets

Specifications of M30845FJGP#U3

Core Processor
M32C/80
Core Size
16/32-Bit
Speed
32MHz
Connectivity
CAN, I²C, IEBus, SIO, UART/USART
Peripherals
DMA, PWM, WDT
Number Of I /o
121
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 34x10b, D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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M
R
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E
3
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J
2
Figure 8.2 Address Bus and Chip-Select Signal Outputs (Separate Bus)
0
C
1
9
0 .
8 /
B
0
1
Chip-Select Signal
4
0
Chip-Select Signal
Chip-Select Signal
3
G
J
6
u
o r
Example 3:
0 -
. l
Address Bus
Example 1:
u
Address Bus
0
1
When the microcomputer accesses the external
space j specified by another chip-select signal in the
next cycle after having accessed the external space i,
both address bus and chip-select signal change.
p
, 7
0
When the microcomputer accesses the space i
specified by the same chip-select signal in the next
cycle after having accessed the external space i,
the address bus changes but the chip-select signal
does not.
Data Bus
NOTES:
i = 0 to 3
j = 0 to 3, excluding i
(See Figure 7.3 for i, j and p, k)
i = 0 to 3
(See Figure 7.3 for i and k)
1
Data Bus
(
2
M
1. The above applies to the address bus and chip-select signal in two consecutive cycles.
0
CSk
By combining these examples, a chip-select signal extended by two or more cycles may be output.
3
0
CSp
CSk
5
2
C
8 /
Page 64
, 4
M
3
2
C
Address
Access
External
Space i
Address
Access
External
Space i
f o
8 /
k = 0 to 3
p= 0 to 3, excluding k
k = 0 to 3
4
Data
4
) T
9
Data
5
Access
External
Space i
Access
External
Space j
Data
Data
Example 4:
Chip-Select Signal
Example 2:
Chip-Select Signal
When the microcomputer accesses the SFR or the
internal ROM/RAM area in the next cycle after
having accessed an external space, the chip-select
signal changes but the address bus does not.
When the microcomputer does not access any
space in the next cycle after having accessed an
external space (no pre-fetch of an instruction is
generated), neither address bus nor chip-select
signal changes.
Address Bus
Address Bus
Data Bus
Data Bus
CSk
CSk
k = 0 to 3
k = 0 to 3
Access
External
Space
Access
External
Space
Address
Address
Data
Data
No Access
Access SFR,
Internal
ROM/RAM
Area
8. Bus

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