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M16C View Datasheet(PDF) - Mitsumi

Part NameDescriptionManufacturer
M16C SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Mitsumi
Mitsumi Mitsumi
M16C Datasheet PDF : 349 Pages
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Udenvdeelropment
Preliminary Specifications Rev.1.0
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M16C / 62P Group
Overview
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Table 1.1.5 Pin Description (100-pin and 128-pin Packages) (Continued)
Pin name Signal name I/O type Power supply
Function
P50 to P57 I/O port P5 Input/output VCC2
WRL / WR,
WRH / BHE,
RD,
BCLK,
HLDA,
HOLD,
ALE,
RDY
Output
Output
Output
Output
Output
Input
Output
Input
P60 to P67 I/O port P6 Input/output VCC1
P70 to P77 I/O port P7 Input/output VCC1
P80 to P84, I/O port P8
P86,
P87,
P85
I/O port P85
Input/output VCC1
Input/output
Input/output
Input
P90 to P97 I/O port P9 Input/output VCC1
P100 to
P107
I/O port P10 Input/output VCC1
This is an 8-bit I/O port equivalent to P0. In single-chip mode, P57
in this port outputs a divide-by-8 or divide-by-32 clock of XIN or a
clock of the same frequency as XCIN as selected by program.
Output WRL/WR, WRH/BHE, RD, BCLK, HLDA, and ALE signals.
WRL/WR and WRH/BHE are switchable in a program. Note that
WRL and WRH are always used as a pair, so as WR and BHE.
WRL, WRH, and RD selected
If the external data bus is 16 bits wide, data are written to even
addresses when the WRL signal is low, and written to odd
addresses when the WRH signal is low. Data are read out when the
RD signal is low.
WR, BHE, and RD selected
Data are written when the WR signal is low, or read out when the
RD signal is low. Odd addresses are accessed when the BHE
signal is low. Use this mode when the external data bus is 8 bits
wide.
The microcomputer goes to a hold state when input to the HOLD
pin is held low. While in the hold state, HLDA outputs a low
level. ALE is used to latch the address. While the input level of the
RDY pin is low, the bus of the microcomputer goes to a wait state.
This is an 8-bit I/O port equivalent to P0. Pins in this port also
function as UART0 and UART1 I/O pins as selected by program.
This is an 8-bit I/O port equivalent to P0 (P70 and P71 are N
channel open-drain output). This port can function as input/output
pins for timers A0 to A3 when so selected in a program.
Furthermore, P70 to P75, P71, and P72 to P75 can also function as
input/output pins for UART2, an input pin for timer B5, and output
pins for the three-phase motor control timer, respectively.
P80 to P84, P86, and P87 are I/O ports with the same functions as
P0. When so selected in a program, P80 to P81 and P82 to P84 can
function as input/output pins for timer A4 or output pins for the
three-phase motor control timer and INT interrupt input pins,
respectively. P86 and P87, when so selected in a program, both
can function as input/output pins for the subclock oscillator circuit.
In that case, connect a crystal resonator between P86 (XCOUT pin)
and P87 (XCIN pin).
P85 is an input-only port shared with NMI. An NMI interrupt is
generated when input on this pin changes state from high to low.
The NMI function cannot be disabled in a program.
A pull-up cannot be set for this pin.
This is an 8-bit I/O port equivalent to P0. Pins in this port also
function as SI/O3 and SI/O4 I/O pins, Timer B0 to B4 input pins, D-
A converter output pins, A-D converter input pins, or A-D trigger
input pins as selected by program.
This is an 8-bit I/O port equivalent to P0. Pins in this port also
function as A-D converter input pins as selected by program.
Furthermore, P104 to P107 also function as input pins for the key
input interrupt function.
Table 1.1.6 Pin Description (3) (128-pin Package) (Continued)
Pin name
Signal name
I/O type
Power supply
circuit block
Function
P110 to P117 I/O port P11 Input/output VCC1
This is an 8-bit I/O port equivalent to P0.
P120 to P127 I/O port P12 Input/output VCC2
This is an 8-bit I/O port equivalent to P0.
P130 to P137 I/O port P13 Input/output VCC2
This is an 8-bit I/O port equivalent to P0.
P140, P141 I/O port P14 Input/output VCC1
This is an 2-bit I/O port equivalent to P0.
10
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