TMP86C909XB Toshiba, TMP86C909XB Datasheet - Page 38

• Manufacturer Part Number: TMP86C909XB
• Description: EMULATION CHIP FOR TMP86F SDIP
• Manufacturer: Toshiba

Specifications of TMP86C909XB

• Accessory Type: Adapter
• For Use With/related Products: TMP86F SDIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Example :Switching from the SLOW1 mode to the NORMAL2 mode (fc = 16 MHz, warm-up time is 4.0 ms).
PINTTC4:
VINTTC4:
(2)
First, set SYSCR2<XEN> to turn on the high-frequency oscillation. When time for stabilization
(Warm up) has been taken by the timer/counter (TC4,TC3), clear SYSCR2<SYSCK> to switch the
main system clock to the high-frequency clock.
SLOW mode can also be released by inputting low level on the
operation mode is started from NORMAL1 mode.
Switching from SLOW1 mode to NORMAL2 mode
Note: After SYSCK is cleared to “0”, executing the instructions is continiued by the low-frequency clock
SET
LD
LD
LD
DI
SET
EI
SET
CLR
CLR
RETI
DW
:
:
for the period synchronized with low-frequency and high-frequency clocks.
High-frequency clock
Low-frequency clock
Main system clock
SYSCK
(SYSCR2). 7
(TC3CR), 63H
(TC4CR), 05H
(TTREG4), 0F8H
(EIRH). 3
(TC4CR). 3
(TC4CR). 3
(SYSCR2). 5
PINTTC4
Page 27
; SYSCR2<XEN>
; Sets mode for TC4, 3 (16-bit mode, fc for source)
; Sets warming-up counter mode
; Sets warm-up time
; IMF
; Enables INTTC4
; IMF
; Starts TC4, 3
; Stops TC4, 3
; SYSCR2<SYSCK>
; INTTC4 vector table
(Switches the main system clock to the high-frequency clock)
←
←
0
1
←
←
1 (Starts high-frequency oscillation)
0
RESET
pin. After releasing reset, the
TMP86F409NG