M16C62P_06 Datasheet, PDF (57/421 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

M16C/62P Group (M16C/62P, M16C/62PT)
5. Reset
Table 5.1 Pin Status When RESET Pin Level is “L”
Pin Name
CNVSS = VSS
P0
P1
P2, P3, P4_0 to P4_3
P4_4
P4_5 to P4_7
P5_0
P5_1
P5_2
P5_3
P5_4
Input port
Input port
Input port
Input port
Input port
Input port
Input port
Input port
Input port
Input port
P5_5
Input port
P5_6
Input port
P5_7
Input port
P6, P7, P8_0 to P8_4, Input port
P8_6, P8_7, P9, P10
P11, P12, P13, P14_0, Input port
P14_1 ⁽²⁾
Status
CNVSS = VCC1 ⁽¹⁾
BYTE = VSS
BYTE = VCC1
Data input
Data input
Data input
Input port
Address output (underfined) Address output (underfined)
CS0 output (“H” is output) CS0 output (“H” is output)
Input port (Pulled high)
Input port (Pulled high)
WR output (“H” is output)
WR output (“H” is output)
BHE output (undefined)
BHE output (undefined)
RD output (“H” is output)
RD output (“H” is output)
BCLK output
BCLK output
HLDA output (The output
value
depends on the input to the
HOLD pin)
HLDA output (The output
value
depends on the input to the
HOLD pin)
HOLD input
HOLD input
ALE output (“L” is output)
ALE output (“L” is output)
RDY input
RDY input
Input port
Input port
Input port
Input port
NOTES:
1. Shown here is the valid pin state when the internal power supply voltage has stabilized after power
on.
When CNVSS = VCC1, the pin state is indeterminate until the internal power supply voltage
stabilizes.
2. P11, P12, P13, P14_0, P14_1 pins exist in 128-pin version.
5.2 Brown-out Detection Reset (Hardware Reset 2)
The microcomputer resets pins, the CPU or SFR by setting the built-in voltage detect circuit. The voltage detect
circuit monitors the voltage applied to the VCC1 pin.
When the VC26 bit in the VCR2 register is set to “1” (reset level detect circuit enabled), the microcomputer
resets pins, the CPU and SFR as soon as the voltage that is applied to the VCC1 pin drops to Vdet3 or below.
The microcomputer resets pins and it is in a reset state when the voltage that is applied to the VCC1 pin is
Vdet3 or below. The microcomputer resets pins, CPU and SFR with Vdet3r or above and it executes the
program from the address determined by the reset vector. The microcomputer executes the program after
detecting Vdet3r and waiting td(S-R) ms. The same pins and registers are reset by the hardware reset 1 and
brown-out detection reset (hardware reset 2), and are also placed in the same reset state.
The microcomputer cannot exit stop mode by the brown-out detection reset (hardware reset 2).
Rev.2.41 Jan 10, 2006 Page 42 of 390
REJ09B0185-0241