UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 91

• Manufacturer Part Number: UPD70F3738GF-GAS-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3738GF-GAS-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(2) Command register (PRCMD)
Note Five NOP instructions or more must be inserted immediately after setting the IDLE1 mode, IDLE2 mode,
Caution When a store instruction is executed to store data in the command register, interrupts are
Remark
The PRCMD register is an 8-bit register that protects the registers that may seriously affect the application
system from being written, so that the system does not inadvertently stop due to a program hang-up. The first
write access to a special register is valid after data has been written in advance to the PRCMD register. In this
way, the value of the special register can be rewritten only in a specific sequence, so as to protect the register
from an illegal write access.
The PRCMD register is write-only, in 8-bit units (undefined data is read when this register is read).
or STOP mode (by setting the PSC.STP bit to 1).
After reset: Undefined
PRCMD
not acknowledged.
performed by successive store instructions. If another instruction is placed between <3>
and <4>, and if an interrupt is acknowledged by that instruction, the above sequence may not
be established, causing malfunction.
Although dummy data is written to the PRCMD register, use the same general-purpose register
used to set the special register (<4> in the example) to write data to the PRCMD register (<3> in the
example). The same applies when a general-purpose register is used for addressing.
REG7
7
REG6
6
W
This is because it is assumed that steps <3> and <4> above are
CHAPTER 3 CPU FUNCTION
REG5
User’s Manual U18953EJ5V0UD
Address:
5
FFFFF1FCH
REG4
4
REG3
3
REG2
2
REG1
1
REG0
0
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