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IMPORTANT
Note on Differences between Actual MCU and Emulator:
•Operations of the emulator differs from those of actual MCUs as listed below.
(1) Reset condition
Set the time for starting up (0.2Vcc to 0.8Vcc) 1µs or less.
(2) Data values of ROM area at power-on
(3) Internal memories (RAM and ROM) capacities etc.
(4) Characteristics of Port P00 to P57
Ports P00 to P57 are connected via port emulation circuits. The device used for the port
emulation circuit is:
Device: M60074-0111FP
(5) A-D input
As a flexible cable, a pitch converter board and other devices are used between the evaluation
MCU and the target system, some characteristics are slightly different from those of the actual
MCU. Therefore, be sure to evaluate your system with an evaluation MCU. Before starting
mask production, evaluate your system and make final confirmation with an ES (Engineering
Sample) version MCU.
(6) Pull-up control
Port P0-P5 pullup control in this product is different between modes as shown in Table 1.1.
There is not difference for ports P6 to P10.
Table 1.1 P0-P5 Pullup control
(7) Write to pullup control registers 0, 1 (addresses 03FC16, 03FD16)
When you write to pullup control registers 0, 1 (addresses 03FC16, 03FD16), always be sure
to write in units of words beginning with address 03FC16.
This paragraph constitutes a limitation on M306V2T-RPD-E.
(8) Ports P50-P53
When you enable the pullup resistors of these ports in single-chip mode by setting pullup
control register 1 bit 2 (PUR12) to "1", always be sure to set processor mode register 0 bit 2
(PM02) and bit 7 (PM07) both to "0".
This paragraph constitutes a limitation on M306V2T-RPD-E.
Single-chip mode
(1) Enabled for only input
ports
(2) Can be set bitwise
Memory expansion/microprocessor mode
Disabled
(Enabled if P44 (CS0) to P47 (CS3) are used
as input ports, however.)
(1) Always enabled irrespective of operation mode
(Also enabled when used as address/data bus or output ports)
(2) Cannot be set bitwise
Can only be set in units of 4 bits (P00-P03, P04-P07, ... P50-P53,
P54-P57). If any bit in the 4-bit unit is enabled for pullup, all of the four
bits are enabled for pullup.
Actual MCU
This
emulation
pod