M3087BFLBGP#U5 Renesas Electronics America, M3087BFLBGP#U5 Datasheet - Page 342

• Manufacturer Part Number: M3087BFLBGP#U5
• Description: IC M32C/87 MCU FLASH 144LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M32C/80r

Specifications of M3087BFLBGP#U5

• Core Processor: M32C/80
• Core Size: 16/32-Bit
• Speed: 32MHz
• Connectivity: EBI/EMI, I²C, IEBus, IrDA, SIO, UART/USART
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 121
• Program Memory Size: 1MB (1M x 8)
• Program Memory Type: FLASH
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 34x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: R0K330879S001BE - KIT DEV RSK M32C/87R0K330879S000BE - KIT DEV RSK M32C/87
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

M32C/87 Group (M32C/87, M32C/87A, M32C/87B)
REJ09B0180-0151 Rev.1.51 Jul 31, 2008
Page 318 of 587
21. X/Y Conversion
The X/Y conversion rotates a 16 x 16 matrix data by 90 degrees and also inverts high-order bits and low-order bits of a
16-bit data. Figure 21.1 shows the XYC register.
The 16-bit XiR register (i = 0 to 15) and 16-bit YjR register (j = 0 to 15) are allocated to the same address. The XiR
register is a write-only register, while the YjR register is a read-only register. Access registers XiR and YjR from an
even address in 16-bit units. Performance cannot be guaranteed if registers XiR and YjR are accessed in 8-bit units.
Figure 21.1
The XYC0 bit in the XYC register determines how to read the YjR register.
When setting the XYC0 bit to 0 (data converted) and reading the YjR register, all the bits j in registers X0R to X15R
can be read.
For example, bit 0 in the X0R register can be read when reading bit 0 in the Y0R register, bit 0 in the X1R register
when reading bit 1 in the Y0R register..., bit 0 in the X14R register when reading bit 14 in the Y0R register, and bit 0
in the X15R register when reading bit 15 in the Y0R register.
Figure 21.2 shows a conversion table when the XYC0 bit is set to 0. Figure 21.3 shows an example of the X/Y
conversion.
X/Y Control Register
b7 b6 b5 b4
b3
b2
XYC Register
b1
b0
Symbol
( b7-b2)
XYC0
XYC1
Symbol
XYC
Bit
−
Unimplemented.
Write 0. Read as undefined value.
Read mode set bit
Write mode set bit
Bit Name
Address
02E0h
0: Data converted
1: Data not converted
0: Bit alignment not converted
1: Bit alignment converted
Function
After Reset
XXXX XX00b
21. X/Y Conversion
RW
RW
RW
−